4 Size, the ideal size is the largest A/H that will fit within the alarm panel, there are panels like the ADE Optima XM, XL will take up to a 7 A/H at a push but the new Honeywell Optima will only take a 2.2 A/H CALL USWITH YOUR PANEL AND WE WILL ADVISE.
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4PCS IMOU Smoke Alarm 10 Years Battery Life Interlinked Smoke Alarms Fire Alarms for Home Scotland
Aliexpress UK
Stunning Dual Ring Display: Featuring a brilliant white neon ring illuminating the classic Coca-Cola graphic at the center, alongside a striking red outer ring for an eye-catching effect.
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CPVAN Fire Smoke Detector 10 Years battery Home Security Independent Smoke Alarm Sensor 85dB Safety
Aliexpress UK
If your burglar alarm sounds outside when there is a power cut or when you switch off your power, then this is likely to be the cause. Maintains power to your intruder alarm system during mains power failure.
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Wireless Motion Sensor Alarm Home Security Device Battery-powered PIR Alert Infrared Sensor Alarm
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If your burglar alarm sounds outside when there is a power cut or when you switch off your power, then this is likely to be the cause. Maintains power to your intruder alarm system during mains power failure.
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Smart Home Alarm System Works with Tuya Smart Life App Home Security Anti-Theft Kit Long Battery for
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Brand new battery for house alarm backup box or children’s scooter/bike/buggy etc
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UPS Backup Battery Power AdapterWaterproof IP65 DC12V 2A 1.5A For CCTV Camera For Home Security
Aliexpress UK
NEO Z-wave Plus Wireless Home Automation Battery-Powered Also Can Be Charged With USB Siren Alarm
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Tuya WiFi Zigbee Window Door Sensor With Battery Smart Home Security Alarm System Voice Control Via
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10-Year Battery life Smoke Detector Fire Alarm Smart Home Security Protection Sensor 85db High
Aliexpress UK