{__Smart smoke detector with temperature sensor

If you aren’t protected against a burglary, you risk your valuables. If you aren’t protected against a fire, you risk everything. That’s why we created the Ajax FireProtect smoke detector. It’s easy to install and control, protected against sabotage and extremely long lasting.__}
Detector type: Wireless
Use: Indoor
Detecting element: Photoelectric sensor
Temperature sensor: From +54°? (+129°F) to 65°? (+149°F)
Tampering alarm: Available
Alarm type: Light and sound
Built-in siren volume: 85 dB
Radio signal power: 20 mW
Communication protocol: Jeweller (868.0-868.6 MHz)
Maximum distance between detector and control panel: Up to 1,300 m (4,265 ft) (in open area)
Power supply: 2 CR2 batteries
Power supply voltage: 3 V
Additional battery: ?R2032
Battery life: Up to 4 years
Operating temperature range: From 0°? (32°F) to +65°? (+149°F)
Operating humidity: Up to 80%
Dimensions: 132?132x31 mm
Weight: 220 g