Ajax FireProtect

Built-in 85dB siren and LED light.
Fixed threshold 59°C, sharp temperature change detection.
Jeweller protocol for bidirectional encrypted communication with a frequency in the 868~868.6MHz range (20mW) and a range of up to 1300m in direct line of sight.
Dimensions: 132x132x31mm.
Power supply: 2x CR2 + 1x CR2032 batteries, lifespan up to 4 years.
Operating temperature: 0°~65°C.
Colour: Black, white.