Genway ALARM SECURITY KIT 1D/13165 GENWAY

Tuya Wi-Fi  alarm + wireless doorbell + door/window opening sensor
The system connects wirelessly. The control panel connects to Internet via Wi-Fi.  
The sensor alerts if there is open window or door, or doorbell pressed in the Tuya / Smart Home mobile application.
Power supply: 110/220V AC, battery backup: 3.7V, 300mAh
Current consumption: <100mA
Radio frequency: 433Mhz
WiFi: IEEE802.11b/g/n
Ringtones: 58
Volume levels:5 (including mute)
Noise (Typical): 85dBA
Expandable: up to 100 bell buttons/sensors
Operating temperature: -10~55℃
Bell Specification:
Power: DC 3V (CR2032 battery)
Standby current: <5uA
Transmission range: <80m (without obstacles and interference)
Radio frequency: 433Mhz
Operating temperature: -10~55℃