Gas Detector with Voice Alarm

Product description:
Photoelectric sensor
Power supplied DC9V battery
Trig temperature for heat sensor : adjustable(60?,70?,80?)
(Generally you can choose 70?)
Red LED indicate alarm
Unique “battery missing” lockout
Low battery alarm
High sensitivity
Built in sounder to give a minimum sound output of 85dB at 3m Senses smoke using the light scatter principle-quick response to visible mouldering smoke
Test button simulates smoke used to check performance at least monthly
option current =40uA, alarm current =120mA
Gas Detector with Voice Alarm