Burglar alarms

1. Conditions of Use
Ambient temperature: -5°C~ 40°C
Relative humidity: 45~95%
Atmospheric pressure: 86kpa~106kpa
Ambient noise: ≤60dB
2. Alarm controller
Operating frequency: 315MHz
Effective distance between alarm controller and remote control and sensor: ≥100M (open ground)
Alarm controller size: 154mmX107mmX40mm