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The wireless door bell adopts fashionable design and technology, melodies function and large effective range, easy to install and use, is a good choice for your house, villa, office, nursing room, etc.
 
Features
 
36 high quality melodies for you choose
 
Adjustable Volume (4 levels), 25-85dB

Long remote control distance to 280 meters (in the open air)

No error when signal transmit, no disturb your neighbors

Optical signal on receiver for elder or disabled people

Waterproof transmitter button, can be pressed more than 100, 000 times

Different plugs to meet different market standards (Euro/US/UK etc.)

CE, RoHS, FCC available

Clamshell blister standard package, customized package available

 
Specification

Work Voltage: AC 110V/220V 50Hz/60Hz (range AC 100-240V available)

Work Frequency: 315MHz / 433MHz

Transmitter Size: 20x40x75 mm

Receiver Size:  30x60x95 mm X2 pcs

Transmitter Power :< 10mW   

Receiver Standby: <1mA

Transmitter battery type: 23A 12V (1 PC, alkaline, standby lifespan: 15 months)