Ajax Alarm System Installation
London & Home Counties
Award-winning Ajax wireless and Fibra wired alarm systems professionally installed across Greater London, Surrey, Hertfordshire, Buckinghamshire, Berkshire, Essex and Kent. Hub 2 Plus, MotionCam photo verification, FireProtect 2 fire detection — all on one app, BS EN 50131 Grade 2 certified.
Ajax alarm system — quick facts
- Cost installed in London: £995 to £3,000 inc VAT depending on property size.
- Wireless range: Up to 2,000 m (Jeweller protocol), typically 200–400 m through walls.
- Battery life: 7 years per sensor under normal use.
- Insurance compliance: BS EN 50131 Grade 2 certified (Grade 3 capable with Hub Hybrid).
- App cost: Free for life — no monthly subscription required.
What is an Ajax alarm system?
Ajax is Europe’s most-awarded wireless security system, designed by Ajax Systems and used in over 169 countries. It combines a smart hub, encrypted wireless detectors, and a free app into one professional-grade alarm — without the wires, the keypad clutter, or the monthly contract lock-in.
Ajax Systems was founded in 2011 and has won iF Design, Red Dot and Detektor International awards for its products. The system is professionally installed across the UK by accredited engineers — DIY installation is discouraged because device positioning, signal verification and Grade 2 compliance documentation all require trained survey work.
Three things separate Ajax from older wireless alarms (such as Visonic PowerMax or earlier Pyronix Enforcer):
- Two-way encrypted radio — every device confirms receipt of every signal, and the hub knows immediately if any sensor goes offline (typically within 36 seconds).
- Photo verification — MotionCam sensors capture animated photo sequences when triggered, allowing alarm verification before police response. This dramatically reduces false dispatches.
- One free app for life — full system control with no subscription, supporting unlimited users with custom permissions (handy for letting a cleaner in only on Tuesdays).
Why London homes and businesses choose Ajax
Ajax has become the default wireless alarm choice in London since 2018 — replacing legacy bell-only systems, Verisure rental contracts, and underperforming budget kits. Here’s what drives the shift.
Free app for life
No monthly fees, no rental contracts. Arm, disarm and view events from anywhere. Unlimited users with custom permissions.
Photo verification
MotionCam captures animated photo sequences on alarm. Verify real intrusions before police are dispatched.
Insurance compliant
BS EN 50131 Grade 2 certified out of the box. Grade 3 capable with Hub Hybrid. Written certificate provided.
7-year batteries
Sensors run for up to 7 years on factory batteries. App alerts you 60 days before any replacement is needed.
Why SatFocus for your Ajax installation
Checkatrade verified
Independently reviewed installer. 4.9 / 5 average rating across 180+ verified reviews.
DBS-checked engineers
Every engineer is enhanced-DBS checked, uniformed and ID-carded. We work in your home or business.
3,000+ installs since 2015
Specialist Ajax installer. Hub 2, Hub 2 Plus, Hub Hybrid and Fibra deployed across London and the Home Counties.
Same-day survey
Free, no-obligation survey across most of Greater London within 24–48 hours. Fixed quote within a working day.
Ajax Jeweller — the wireless protocol that makes it work
Jeweller is the technology that makes Ajax materially different from older wireless alarms. Most pre-2015 wireless systems used one-way 433 MHz radio — a sensor would shout into the void hoping the panel was listening. If a sensor’s battery died, you wouldn’t know until you tested it. With Jeweller, every signal is acknowledged. Every device’s status is monitored. If anything goes wrong, the app pings you immediately.
Jeweller — key technical specifications
| Specification | Value |
|---|---|
| Frequency band | 868.0–868.6 MHz (UK / EU licence-free) |
| Communication | Two-way, encrypted (AES-256-style block cipher) |
| Maximum open-space range | 2,000 m (Hub 2 Plus to detector) |
| Typical in-building range | 200–400 m through walls / floors |
| Polling interval | 12, 24, or 36 seconds (configurable) |
| Frequency hopping | Yes — automatic on interference detection |
| Anti-jamming detection | Yes — alerts on app within seconds |
| Maximum devices per hub | 200 (Hub 2 Plus / Hub Hybrid 2G/4G) |
Ajax’s second protocol, Wings, runs alongside Jeweller specifically to transmit MotionCam photo sequences. Wings uses a higher data-rate channel and dedicated antenna so images arrive reliably even when the main alarm channel is busy. Both protocols run on the same hub, the same battery and the same encrypted infrastructure.
Wireless or wired Ajax — which setup is right for you?
Below is a side-by-side decision matrix to help you pick the right Ajax setup before requesting a quote.
Ajax wireless alarm
The default for residential installations across London. Uses the Jeweller wireless protocol (868 MHz, encrypted, two-way) between hub and detectors.
- 4–5 hour install in a 3-bed home
- No cable chasing, no plaster damage
- 7-year sensor batteries
- BS EN 50131 Grade 2 certified
- Hub 2, Hub 2 Plus, or Hub Hybrid
- Range up to 2,000 m open / 200–400 m through walls
Ajax wired alarm (Fibra)
Hardwired bus protocol using standard 4-core alarm cable. Power and data on the same cable, runs up to 2,000 metres per branch, no radio interference.
- 1–3 day install (longer for cable runs)
- Tamper resistance to BS EN 50131 Grade 3
- No batteries to replace in sensors
- Zero RF interference
- Hub Hybrid panel required
- Up to 100 wired devices on one hub
Wireless vs wired Ajax — at-a-glance comparison
| Factor | Wireless (Jeweller) | Wired (Fibra) |
|---|---|---|
| Install time (3-bed home) | 4–5 hours | 1–2 days |
| Hub required | Hub 2, Hub 2 Plus, or Hub Hybrid | Hub Hybrid only |
| Cable required | None (battery-powered sensors) | 4-core, up to 2,000 m per branch |
| Battery replacement | Every 5–7 years per sensor | None (powered from bus) |
| Insurance grade | EN 50131 Grade 2 | EN 50131 Grade 2 or Grade 3 |
| RF interference | Resilient (frequency hopping) | None (wired) |
| Tamper resistance | Hub-monitored | Higher (cable cuts detected) |
| Aesthetic impact | Surface-mounted, small | Cable hidden in walls |
| Typical 3-bed price | £995–£1,495 | £1,995–£2,800 |
| Best fit | Retrofits, residential | New builds, commercial |
Hybrid — when you want both
Ajax Hub Hybrid runs Fibra and Jeweller on the same panel. In practice this means you can wire the perimeter of a building (front and back doors, garage, perimeter PIRs) for tamper resistance, then drop wireless sensors into upstairs bedrooms and bathrooms without cable. SatFocus designs hybrid installations for London properties where part of the building is a recent extension or refurbishment (cable already accessible) and the rest is original (where chasing walls would damage finishes).
For a hybrid quote, we run a paid 90-minute commercial-grade survey before quoting because the cable routes need plotting on a floor plan first.
Ajax Fibra — hardwired Ajax for commercial & new builds
Most London homes use the wireless Jeweller protocol because it installs faster, looks cleaner, and avoids chasing cable through plaster. But there are cases where wired Fibra is genuinely the better engineering choice:
- New builds and major refurbishments — cable can be installed during first-fix at minimal extra cost.
- Commercial premises — warehouses, retail units, offices where insurance demands Grade 3.
- Listed buildings with thick walls — where wireless signal struggles or where surface-mounted sensors aren’t permitted.
- Properties over ~4,000 sq ft — long Fibra cable runs are simpler than wireless repeaters.
- Sites with heavy radio interference — adjacent to radio masts, broadcast equipment, or industrial RF.
The neat part: Ajax Hub Hybrid runs Fibra and Jeweller on the same hub. You can wire the perimeter of a commercial unit on Fibra for tamper resistance, then drop wireless MotionCam photo-verification cameras into the office area without pulling more cable. One panel, one app, two protocols.
SatFocus designs and installs Ajax Fibra installations across London and the Home Counties. Fibra projects start with a paid commercial site survey because cable routes need to be assessed before quoting accurately.
Ajax range — what we install
Five core products cover 95% of London residential and small commercial installations. Larger commercial sites add Fibra-wired devices to the same Hub Hybrid panel.
Ajax Hub 2
The mainstream wireless hub for 2–3 bedroom homes. Ethernet plus single SIM 2G/3G/4G backup, supports up to 100 Jeweller devices.
- Up to 100 wireless devices
- Up to 50 connected users
- EN 50131 Grade 2
- 16 h backup battery
Ajax Hub 2 Plus
The flagship wireless panel. Adds Wi-Fi, dual SIM, faster processor, and supports up to 200 devices plus 25 IP cameras through the Ajax app.
- Up to 200 wireless devices
- Up to 100 users
- 25 IP cameras supported
- Wi-Fi + Ethernet + dual SIM
Ajax Hub Hybrid (2G/4G)
Runs Fibra hardwired and Jeweller wireless on the same panel. The right choice for commercial sites, new builds, and Grade 3 applications.
- Fibra wired + Jeweller wireless
- EN 50131 Grade 2 (Grade 3 capable)
- 2,000 m cable runs per Fibra branch
- Up to 100 connected devices
Ajax MotionCam
Wireless PIR motion detector with built-in camera. Captures animated photo sequences on alarm so you (or the ARC monitoring station) can verify intrusion before police are called.
- 5 photo sequence per alarm
- Pet-immune up to 20 kg
- 4-year battery life
- Wings high-speed image protocol
Ajax FireProtect 2
Wireless smoke, heat and carbon monoxide detector with built-in 85 dB sounder. Sits on the same hub as your intruder alarm — one app, one system, full home protection.
- Dual infrared smoke sensors
- Heat + CO detection options
- Built-in 85 dB sounder
- EN 14604 / EN 50291 certified
Ajax Fibra range
Wired equivalents of every Jeweller device — MotionProtect Fibra, DoorProtect Fibra, GlassProtect Fibra, KeyPad Fibra and more. Power and data on a single 4-core cable.
- 2,000 m cable runs per branch
- Tamper resistance to Grade 3
- Power over the same bus
- Mix wired + wireless on Hub Hybrid
Ajax fire alarm & FireProtect 2 — the same app, the whole risk
Until recently you had two separate systems for fire and intrusion — a Hispec or Aico smoke chain wired into the lighting circuit, and a separate intruder panel. Ajax replaces both. The integration matters because:
- One verification channel. A FireProtect 2 alarm at 03:00 sends a push notification to every user on the Ajax app within seconds — and shows you exactly which detector triggered.
- Heat-only variants for kitchens and bathrooms (where steam routinely false-triggers smoke detectors).
- Carbon monoxide detection on the same device — required by Smoke and Carbon Monoxide Alarm regulations for many rentals.
- Interconnected sounders. When one detector triggers, every detector on the hub sounds — so a kitchen fire wakes the upstairs bedrooms.
- Tamper, low battery and offline alerts all flow through the same app you already use for the burglar alarm.
FireProtect 2 detectors are EN 14604 (smoke) and EN 50291 (CO) certified. SatFocus typically pairs four to six FireProtect 2 detectors with a standard Ajax intruder install — one in each bedroom, one in the upstairs hallway, one in the kitchen (heat variant), and one near any boiler or fireplace (smoke + CO variant).
Ajax sensors & sirens — every device explained
Indoor sensors — intrusion detection
MotionProtect
PIR motion · indoorStandard wireless passive infrared motion detector. Pet-immune up to 20 kg. 12 m detection range, 88° viewing angle. The default sensor for hallways, landings and reception rooms.
MotionCam
PIR + camera · indoorPIR detector with built-in camera that captures 5 photo sequence on alarm. Sends animated photo verification through the Ajax app — eliminates false-dispatch police call-outs.
DoorProtect
Magnetic contactWireless magnetic contact for doors and windows. Triggers when the door or window is opened. Low-profile, white or black variants. Optional shock sensor for glass-break.
CombiProtect
PIR + glass-break comboCombined motion and glass-break detector in a single device. Cuts down on the number of sensors needed in a room with patio doors or large windows.
MotionProtect Curtain
Beam motion · perimeterNarrow-beam PIR for perimeter detection along walls or windows. Detects motion crossing the protected line, ignores motion further inside the room. Useful for shop windows.
GlassProtect
Acoustic glass-breakAcoustic glass-break detector covering up to 9 m. Listens for the dual-frequency signature of breaking glass. Ideal for ground-floor rooms and patio doors.
Outdoor sensors — perimeter detection
Outdoor Ajax detection is one of the fastest-growing parts of the range — searches for “ajax outdoor sensor” are up 200% year-on-year. Three devices cover almost every outdoor scenario:
MotionProtect Outdoor
Outdoor PIR · IP55Weatherproof PIR with dual-IR and microwave sensors to reject false alarms from animals, weather and foliage. Effective up to 15 m. Ideal for driveways, garden paths and rear gardens.
MotionCam Outdoor
Outdoor PIR + cameraOutdoor version of MotionCam with photo verification. Captures animated photo sequences when triggered — perfect for verifying real intrusions vs garden wildlife from inside the warm.
DualCurtain Outdoor
Bi-directional beamTwo narrow PIR beams creating a “curtain” along an outdoor wall. Detects approach from either direction. Used for boundary protection along fences, patio entries and side passages.
Sirens — indoor & outdoor
Ajax sirens are the audible deterrent — and increasingly the visible one. Three siren options cover most installations:
StreetSiren
Outdoor · 105 dBWall-mounted outdoor siren with a 105 dB sounder. Bright LED strobe for visual alert. Standard tamper detection. The default external warning device on every SatFocus Ajax install.
StreetSiren DoubleDeck
Outdoor · 113 dBPremium dual-speaker outdoor siren with 113 dB output and a customisable branded faceplate. The visual side is the upgrade — neighbours and would-be intruders can see the brand from the street.
HomeSiren
Indoor · 105 dBIndoor wireless siren for hallways, landings or stairwells. Doubles as an audible chime on door-open events when the system is disarmed. White finish blends into most decor.
Control devices
Most Ajax users arm and disarm via the app — but physical control devices remain useful for visitors, cleaners, and anyone who doesn’t want to fish out a phone at the front door.
KeyPad / KeyPad Plus
PIN · proximity tagWall-mounted keypad with backlit keys. KeyPad Plus adds proximity-tag (Mifare DESFire) reading for keychain fobs. Up to 4 user passcodes plus duress code on the basic KeyPad.
SpaceControl
4-button key fobKeychain remote with arm, disarm, night-mode and panic buttons. Two-way encrypted, range up to 1,300 m line-of-sight. Useful for elderly users who prefer not to use the app.
Button (panic)
Panic / personal alarmWireless panic button — wall-mounted under a desk, on a bedside table, or wearable on a lanyard. Single-press sends a priority alert through the Ajax app and (where configured) to the ARC.
Every device above is supplied, installed and configured by SatFocus as part of the standard Ajax package. Wired Fibra equivalents (MotionProtect Fibra, DoorProtect Fibra, etc.) are available where the Hub Hybrid is specified.
Ajax alarm kits we install — what each setup includes
Four kit configurations cover 95% of the work we do across London and Home Counties. Every kit includes hardware, professional installation, app commissioning, user training and a BS EN 50131 Grade 2 compliance certificate. Survey is free and confirms the exact specification and price before any commitment.
Hub 2 kit
2–3 bed homes · wireless
- Ajax Hub 2 (4G backup)
- 3× MotionProtect PIRs
- 2× DoorProtect contacts
- 1× StreetSiren outdoor
- 1× KeyPad
- App setup & training
- Grade 2 compliance certificate
Hub 2 Plus kit
3–4 bed homes · photo verified
- Ajax Hub 2 Plus (Wi-Fi + dual SIM)
- 5× MotionProtect PIRs
- 4× DoorProtect contacts
- 1× MotionCam (photo verification)
- 1× StreetSiren DoubleDeck
- 2× KeyPads
- App setup & training
- Grade 2 compliance certificate
Hub Hybrid kit
4–5 bed · fire + intruder
- Ajax Hub Hybrid (2G/4G)
- 6× PIRs (wired + wireless mix)
- 6× DoorProtect contacts
- 2× MotionCam (photo verified)
- 2× FireProtect 2 (smoke + heat)
- StreetSiren + indoor siren
- Grade 2 (Grade 3 capable)
- Compliance certificate
Fibra wired install
bespoke
Commercial · Grade 3 · Fibra
- Multi-zone commercial
- Ajax Fibra hardwired backbone
- Integrated CCTV (Hikvision / Dahua)
- Access control integration
- Multiple buildings / multi-site
- Listed buildings / new builds
- Grade 3 compliance available
- Free survey across London
Indicative ranges based on the typical SatFocus installation. Free survey confirms exact device count, cable routing and final price. Annual maintenance plans available from £180 inc VAT.
Switching from Verisure, ADT or a bell-only alarm
Replacing Verisure
Verisure systems are leased — you don’t own the kit. Cancellation typically requires 30 days’ notice. We install Ajax around your existing system, then switch over and remove the old hardware on the changeover date. No service gap.
Replacing ADT
ADT alarms are usually older Visonic PowerMax or Honeywell hardware on a fixed monitoring contract. We can usually leave existing wired siren cables in place and reuse them, reducing install time and cost.
Upgrading bell-only systems
If your current alarm just makes noise without notifying anyone, you have a 1990s system. Most modern insurers won’t recognise it for premium discounts. Ajax with 4G backup brings you to current standard for under £1,500.
Most replacements are completed in a single 4–6 hour visit. We’ll confirm the changeover date with you in advance, run both systems briefly in parallel during testing, and decommission the old equipment cleanly. You’ll have a written compliance certificate on the day.
How we install your Ajax alarm system
A documented six-step process — from your initial enquiry to handover and compliance certificate. Total elapsed time from booking to live system is typically 5 to 10 working days.
Free site survey
An engineer visits your property to assess room layout, entry points, signal paths, mains positions and broadband coverage. Survey takes 30–45 minutes and is free with no obligation.
Design & quote
We propose a device list (hub, sensors, cameras, sirens) matched to your property, your insurance grade and your budget. Fixed written quote within 24 hours.
Hardware preparation
On confirmation we register the hub, pair every device, apply firmware updates and configure the Jeweller wireless network in our workshop before arrival.
On-site installation
Engineer installs the hub near your router, mounts each detector at the surveyed position, tests signal strength via the Ajax app and configures arming groups. Typical install: 4–5 hours.
App setup & user training
We invite you and any additional users to the Ajax app, set permissions, configure scenarios such as night-mode, and walk you through every function with a printed quick-start guide.
Compliance & aftercare
You receive a BS EN 50131 Grade 2 (or Grade 3) compliance certificate for your insurer, a 12-month workmanship warranty, and the option to enrol in our annual maintenance plan.
Ajax vs Texecom vs Pyronix vs Verisure — at a glance
All four are Grade 2 alarm systems sold in the UK. Each suits a different use case. Here’s the honest comparison from an installer who fits all of them.
| Feature | Ajax | Texecom Premier Elite | Pyronix Enforcer | Verisure |
|---|---|---|---|---|
| Wireless / Wired / Hybrid | All three (Hub Hybrid) | Wired or Hybrid | Wireless or Hybrid | Wireless only |
| EN 50131 Grade | Grade 2 (Grade 3 capable) | Grade 2 / 3 | Grade 2 | Grade 2 |
| Photo verification | ✓ MotionCam | No (third-party only) | No | ✓ |
| Mobile app | Free for life | Texecom Connect (free) | HomeControl+ (free) | Included in subscription |
| Monthly cost (no monitoring) | £0 | £0 | £0 | £30–£50 |
| Own the hardware? | ✓ Yes | ✓ Yes | ✓ Yes | No (lease) |
| Battery life (sensors) | 7 years | 3–5 years | 4–5 years | 2–3 years |
| Installed price (3-bed) | £995–£1,495 | £695–£1,095 | £695–£995 | £0 setup + ongoing fees |
| Best for | Smart-home, photo verify, no contracts | Hardwired retrofits, large homes | Budget wireless | Bundled monitoring |
Where we install Ajax — Greater London & Home Counties
SatFocus installs Ajax across all 32 London boroughs and the surrounding Home Counties from our Harrow base. Free survey within roughly 50 miles of HA2 8TF.
Local — Harrow & HA postcodes
Greater London — boroughs we serve
Home Counties — typical coverage
Areas outside this radius are covered on a project-by-project basis. Please call 020 8422 7918 with your postcode for a travel-inclusive quote.
Ajax alarm system — frequently asked questions
Plain-English answers to the questions Londoners actually ask before installing Ajax. Each answer is structured for direct extraction by AI search engines and voice assistants.
Should I choose wireless or wired Ajax for my home?
For most London homes, wireless Ajax (Hub 2 or Hub 2 Plus with the Jeweller protocol) is the right choice. It installs in a single 4–5 hour visit, leaves no plaster damage, and is fully BS EN 50131 Grade 2 certified — the standard insurers require.
Choose wired Fibra (Hub Hybrid panel) when you have a new build during first-fix, a commercial property, a listed building, or a property over roughly 4,000 sq ft. The hybrid option lets you wire the perimeter and drop wireless sensors into other rooms.
A typical wireless 3-bed install is £995 to £1,495; the equivalent wired Fibra install is £1,995 to £2,800.
Does Ajax integrate with Home Assistant, Alexa or Google Home?
Yes. Ajax integrates with Home Assistant via the official Ajax Cloud API integration, allowing arm/disarm scenarios, sensor states, and event triggers in Home Assistant automations. Amazon Alexa and Google Home are supported through the Ajax Translator hub for voice control of arm and disarm commands. Apple HomeKit is not supported natively.
Most SatFocus customers use the free Ajax app directly rather than third-party integrations — it is faster, more secure, and provides photo verification natively. Smart-home integration is a bonus, not a replacement.
How much does an Ajax alarm system cost installed in London?
Professional Ajax alarm installation across London costs between £995 and £3,000 depending on property size and components. A typical 3-bedroom home with Ajax Hub 2 Plus, four motion sensors, four door contacts, an outdoor siren and a keypad costs around £1,495 inc VAT. Larger homes with photo verification (MotionCam) and fire detection (FireProtect 2) typically run £1,995 to £2,500. Commercial sites or hybrid wired/wireless installations using Ajax Fibra are quoted individually following a free site survey.
What is the Ajax Jeweller protocol?
Jeweller is Ajax Systems’ proprietary two-way encrypted wireless protocol used between the hub and detectors. It operates in the 868 MHz licence-free band, hops frequencies to resist jamming, and provides a range of up to 2,000 metres in open space (typically 200–400 metres through walls). Each device exchanges status messages with the hub every 12 to 36 seconds, so any sensor that goes offline is detected immediately. Jeweller is one of two Ajax radio protocols — the other is Wings, used for transmitting MotionCam photos.
Is Ajax better than Texecom or Pyronix?
Ajax, Texecom and Pyronix are all BS EN 50131 Grade 2 alarm systems suited to UK homes. Ajax is fully wireless with the strongest mobile app on the market and built-in photo verification. Texecom Premier Elite is a hardwired or hybrid panel preferred for large or older properties where cabling already exists. Pyronix Enforcer is a competitively priced wireless system manufactured in Hassocks, West Sussex. SatFocus installs all three. The right choice depends on whether you need wireless flexibility (Ajax), hardwired robustness (Texecom), or budget value (Pyronix).
Can Ajax alarms be installed without internet?
Yes. Ajax Hub 2 Plus and Hub Hybrid include dual SIM 2G/3G/4G as standard, so the system stays online and reports alarms even with no broadband. The Hub 2 (basic model) supports a single 2G/3G SIM as backup to Ethernet. App control still requires a mobile data connection at the hub, but the alarm itself functions without Wi-Fi or broadband.
How long does Ajax battery life last?
Ajax sensor batteries are rated for up to 7 years of operation under normal use. The Hub itself contains a backup battery that provides 16 hours of standby in the event of a mains power failure. The Ajax app sends low-battery warnings approximately 2 months before replacement is needed. SatFocus offers an annual maintenance visit that includes battery checks and firmware updates.
What is the difference between Ajax Hub 2 and Hub 2 Plus?
The Ajax Hub 2 supports up to 100 Jeweller devices, single SIM card, and 50 users. The Hub 2 Plus supports up to 200 devices, dual SIM, Wi-Fi, faster processor, and 100 users. For a typical 2 to 3 bedroom home the Hub 2 is sufficient. Larger homes, multi-occupancy properties, or installations needing photo verification with multiple MotionCam units benefit from the Hub 2 Plus. The price difference is approximately £180 in hardware plus a small labour increase.
Can Ajax replace my existing Verisure or ADT alarm?
Yes. SatFocus regularly replaces Verisure and ADT rental contracts with owned Ajax systems. Verisure and ADT systems are typically locked to their own monitoring contracts (£30–£50 per month). Once you switch to Ajax you own the equipment outright, the app is free for life, and optional 24/7 monitoring through an Alarm Receiving Centre costs roughly £15–£20 per month. The old system is removed and the new Ajax kit is installed in a single visit.
What is Ajax Fibra and when do I need it?
Ajax Fibra is the manufacturer’s hardwired bus protocol, used with the Ajax Hub Hybrid panel. Fibra supports cable runs up to 2,000 metres per branch and up to 100 wired devices on a single hub. It is recommended for commercial properties, new builds where cable can be installed during construction, and any site where tamper resistance and zero radio interference are critical. Most London homes use the wireless Jeweller protocol; Fibra is typically reserved for commercial work or properties over roughly 4,000 sq ft.
Is Ajax compatible with Hikvision or Dahua CCTV?
Yes. Ajax Hub 2 Plus supports up to 25 IP cameras directly through the Ajax app via RTSP. SatFocus regularly integrates Ajax with Hikvision and Dahua CCTV so a single app shows live alarm events alongside camera footage. When an alarm is triggered, the app pulls live video from the nearest camera for instant verification — without paying any monthly fee to Ajax or to the camera manufacturer.
Does Ajax meet UK insurance requirements?
Ajax Hub 2, Hub 2 Plus and Hub Hybrid are certified to BS EN 50131 Grade 2, which is the standard required by most UK home insurers and a significant proportion of commercial policies. SatFocus issues a written compliance certificate after installation that you can supply to your insurer. For higher-risk premises requiring Grade 3 (typically jewellers, gunsmiths, listed building contents), Ajax Hub Hybrid with the appropriate Fibra device set meets the standard.
Can I monitor multiple properties on one Ajax app?
Yes. The Ajax app supports an unlimited number of separate hubs under a single user account. This is ideal for landlords with multiple rentals, parents managing a second home, or business owners with several premises. Each hub can have its own set of users with different access permissions — for example, a cleaner who can disarm only on Tuesdays between 09:00 and 12:00.
How long does Ajax installation take?
A standard wireless Ajax installation in a 3-bedroom London home takes approximately 4 to 5 hours, including site survey, device placement, hub configuration, app setup and customer handover. Larger homes with 8+ devices, MotionCam photo verification or FireProtect 2 fire detection take 6 to 8 hours. Hardwired Ajax Fibra installations are quoted on a per-project basis and typically span 1 to 3 days depending on cable routes.
Do you install Ajax outside Greater London?
Yes. SatFocus installs Ajax across the Home Counties — Surrey, Hertfordshire, Buckinghamshire, Berkshire, Essex, Kent and Middlesex — within roughly 50 miles of our Harrow base. We cover Watford, Slough, Uxbridge, Beaconsfield, Gerrards Cross, Amersham, Wembley and surrounding postcodes as standard. Travel to areas further out is quoted on a per-project basis.
Is the Ajax app free to use?
Yes. The Ajax Security System app for iOS and Android is completely free, with no monthly subscription. You can arm, disarm, view event history, manage users, configure scenarios and receive push notifications without paying anything to Ajax. Optional 24/7 monitoring through a third-party Alarm Receiving Centre is the only ongoing cost, and is itself optional.
Other alarm brands we install
SatFocus is a multi-brand specialist. If Ajax isn’t the right match for your property, we install the full range of UK Grade 2 alarms.
Ready to install Ajax in your home or business?
Free survey across most of Greater London and Home Counties. Fixed-price quote within 24 hours. BS EN 50131 Grade 2 compliance certificate included with every install.