Lifesaver 10 Year Wireless Interconnect PE Smoke Alarm Sealed LITHIUM Battery

Lithium (non-replaceable sealed in) battery operated smoke alarm
Photoelectric sensing technology
Designed with 2 bug screens. One around the perimeter and another smaller mesh around the sensor chamber.
Single button operation (Test and Hush feature)
Surface mounting bracket for easy installation
Stand alone operation or wireless interconnect up to 24 units
Tamper resistant feature
Hush feature to silence nuisance alarms
Locate function to determine initiating smoke alarm
Monitored wireless network
Compatible with PSA LIFESAVER LIF5800/2 and LIF5800RL/2 mains powered smoke alarms fitted with LIFWMB2 wireless base plate
Range 30m indoors. 100m line of sight