The Kidde KIDK20C Professional Series Alarms can interlink with up to 23 inter-connectible alarms which means that all alarms will sound if any detect smoke or heat.
This K20C Optical Smoke Alarm detects visible fire particles associated with slow smouldering fires. It is 230 volt mains powered with a battery back-up in the event of a power failure. A Hush™ button allows temporary silencing of nuisance alarms caused by cooking or steam and resets automatically.
Power Supply: 230v mains-powered with 9V Alkaline battery back-up
Temperature range: 0 to 40 degrees centigrade
Humidity range: Up to 93% Relative Humidity (RH) non-condensing
Alarm: 85 decibels.
BSI certified to EN:4604:2005.
CE tested and certified