ZTB-836E
Product Feature
Transmitter: no battery, self generated power
Receiver power supply: AC230V
Using high frequency transmit technology and innovative function of same frequency with different code, one doorbell has one code to avoid interference
Radio frequency: 433.92MHz
16 melodies
Volume adjustment
With LED flashing light
Transmitter is IP44
Operating range up to 100 meters in open area
Optional color: black, white
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