Intruder Alarms

Yes. Jeweller protocol has 2km range and works through brick and stone. We test signal strength during installation and add extenders if needed.

5-7 years on most sensors. The hub monitors levels and alerts you well in advance.

Both. The app gives full control for free. Professional ARC monitoring is optional and adds verified response capability.

Yes. The free Ajax app gives you full control — arm, disarm, receive instant push notifications, and view your complete event history without any subscription. If you have MotionCam sensors, you'll receive photo verification directly to your phone so you can see exactly what triggered the alert. Self-monitoring works well for many London homeowners. Professional ARC monitoring adds a graded police response capability, which is worth considering if your insurer requires it or you want a third party verifying alerts when you're unavailable.

The Ajax Hub 2 Plus has a built-in backup battery that keeps the system fully operational for up to 16 hours during a power cut. If your broadband goes down at the same time, the hub automatically switches to its built-in GSM SIM card for communication — so alerts still reach your phone and your monitoring station. All wireless sensors have their own independent batteries lasting 5-7 years, so they continue detecting regardless of mains power. Your home stays protected through any outage.

Absolutely. Ajax is designed to be modular — you can add devices at any time without replacing your existing hub or sensors. Ajax DomeCam and TurretCam connect to your existing Hub 2 Plus and appear in the same app alongside your alarm. You can also add MotionCam sensors for photo-verified alerts in new zones. We regularly return to properties to expand systems as clients' needs evolve, and adding new devices typically takes under an hour per device.