Photoelectric Smoke Alarm with 9V Battery Backup - 240V Mains Powered

CROWN ELITE Photoelectric Smoke Alarm with 9V Battery Backup - 240V Mains Powered Specifications: Complies with AS3786 Power Supply: 240V AC 50Hz with Battery Backup Maximum Current: <70mA Alarm Volume: >85dB at 3 meters Interconnection: Hardwired up to 22 Smoke Alarms Backup Battery Lifespan: 1 Year Type of Installation: Ceiling Dimensions:140mm Diameter x 45mm Height Button to hush silence nuisance alarms Test button and LED light indicator visible to verify battery and alarm operation ACTIVFIRE CERTIFIED Certified to AS 3786: 2014: Complies with Australian Standards.