Power supply: Non-replaceable 3V lithium battery

RF frequency: 868/433 MHz±50KHz

Alarm volume: ≥85dB at 3m

Product lifetime > 10 years

Silence function: Approx.8 mins

14 hours non-disturb function under lower battery status

Size: Φ120 * 38mm

Conform to EN14604:2005/AC:2008

RF distance: > 100 meters in open area

Big test button for easily weekly testing.

Low battery signal alarm

Automatic compensation design with automatic calibration for accurate sensitivity,
suitable for long life operation, lower false alarm rate

Ceiling mounting: easy to install with mounting bracket