■ Wireless frequency: 433Mhz
■ launch distance: 100m (open)
■ Power supply: 1 6F22 9V battery
■ Quiescent current: ≤ 10μA
■ Alarm current: ≤20mA
■ Alarm sound pressure: ≥ 85dB / m
■ Operating temperature: -10 ℃ ~ +50 ℃
■ Ambient humidity: ≤ 95% RH (no condensation)
■ Monitoring area: 20 square meters
■ Dimensions: 107 * 35mm
■ low battery reminder: every 40 seconds to send a short "beep" sound