Outdoor Wireless Doorbell 433Mhz Smart Home Welcome Smart Doorbell 80M~400M Long
$ 12.58
Description
Description: 1. Door bell volume: 85-97dB 2. Transmission and reception frequency: 433.92MHz Wireless distance: The river is about 400 meters open, and the city square is about 110 meters with indoor obstacles of about 20-80 meters. 3. Receiving host AC power supply voltage range: 80V~275V. Receiver host standby power consumption: 100mW (approximately 0.8 kWh per year) 4. Button battery: CR2032 button Battery life: 20000 launches, approximately 3-5 years (estimated at 10 per day). 5. Working environment temperature Receiving host: -20~70 ℃ Doorbell button: -40~70 ℃ 6. Working environment humidity Receiving host: less than 90% Doorbell button: less than 95% 7. Storage temperature Receiving host: -20~70 ℃ Doorbell button: -40~70 ℃
