Aico Ei140e series 3 Smoke 1 Heat Kit - Fully Compliant Mains Powered Smoke Alarms with Battery Back Up

This Ei140 series alarm kit contains three Ei146e smoke alarms and an Ei144e heat alarm. These mains powered smoke and heat alarms with alkaline battery back-up hardwire interlink meaning any trigger will cause all alarms within the system to sound.