Long Distance Wireless AC Doorbell Using Battery $ 11.04 Product information: Operating voltage: AC 100V-230V 50/60Hz Operating frequency: 433.92MHz Standby power consumption: 0.25W Music: 38 songs Volume: 3 gears Controllable volume:> 50dB/1m Receiving distance:150 meters (accessible in open areas) Receiver operating temperature: -10C to 45C Transmitter operating temperature: -20C to 60C Receiver size: 9554 * 50mm Transmitter size: 8050 * 28mm. The transmitter does not need batteries, press self-generating Packing list: 1* Doorbell Product Image:
