The units run out 2032.
eBay
Door Window Wireless Burglar Alarm with Magnetic Sensor Alarm 108dB High Volume Door Open Detectors Home Security Device
Aliexpress UK
EI141RC - Ionisation Smoke Alarm (This unit replaces the EI141 and is back compatible with existing installations). Dual ionisation chamber sensor. Interconnectable with other Ei mains powered alarms.
eBay
KERUI W181 Alarm System Secutrity Home WIFI GSM Alarm Tuya Smart Motion Detector Door Sensor Burglar IP Camera Work Alexa Google
Aliexpress UK
2x Replacement Mounting Base For Aico Ei 141 144 146 2110 Smoke and Heat Alarms
eBay
Ewelink Zigbee3.0 Water Sensor Alarm Water Leak Detector Flood Alert Overflow Security Alarm System Works With Zigbee Gateway
Aliexpress UK
BuyitNow is for 2 bases. The Aico Ei146E smoke and heat alarm base plate is a white hardwired device designed to provide reliable protection for your home. This base plate is specifically compatible with Aico smoke and heat alarm models Ei146E, Ei141RC, and Ei144E. Please note that batteries are not included with this product, making it convenient for professional installation by a certified technician. Trust in the Aico brand for quality and safety in your home security system. (Storage ref J211125 ref )
eBay
Ewelink Zigbee 3.0 Water Sensor Alarm Water Flood Leak Detector Remote Monitoring Overflow Security Alarm System Support ZHA Z2M
Aliexpress UK
Used with 2040 expiry. Base is new
eBay
1-5PCS Carbon Monoxide Alarm Detector 85dB High Sensitive CO Alarm Sensor with LCD Display for Home Office Safety Protection
Aliexpress UK
Replacement Mounting Base for Aico Ei 141 / 144 / 146 / 2110 Smoke & Heat Alarms Base plate only, with screws, installation instructions and sticker
eBay
Wedge-shaped Alarm Anti-theft Door Stopper Block Alarm Wireless Stainless Steel Cover Small Sensitivity Portable for Apartment
Aliexpress UK
The 50 AICO mounting base plate is specifically designed for use with Ei146E, Ei141RC, and Ei144E alarms. Made by the trusted brand Aico, this white smoke detector base plate is hardwired for reliable power source. Manufactured in the United Kingdom, this mounting base plate provides a secure and efficient installation solution for your smoke detectors.
eBay
KERUI 110DB Loud Vibration Detector Alarm for Door Window Safe Vibration Sensor Shock Alarm for Home Protection Easy to Install
Aliexpress UK
Aico 140RC Series alarms. Ei144RC Heat Alarm. 140RC Series. Ei146RC Optical Smoke Alarm. Compatible with other Aico mains powered devices. Large capacity, proven optical sensor chamber. Heat sensor triggers at 58°C.
eBay
433Mhz Indoor Wireless Siren Alarm For Smart Security Alarm System PG103, PG105, PG107, PG108
Aliexpress UK