Wireless doorbell without battery 

Product description:

1. Product features:
   • Battery-free wireless doorbell powered by wireless signals by tapping to generate electricity. No battery, no wiring, easy installation, green and eco-friendly.
   • Simple, generous and high quality design that is very beautiful.
   • Can be used with wireless receivers, smart switches and other wireless equipment for remote control of electrical appliances. Can be easily used for single control, dual control, multi control and interactive control. Can also be used as a light control to switch on or off.
   • Maximum number of 4 buttons and 20 receivers in the same system

1. Product illustration: See other images in our product description for our wireless doorbell
2. Technical specifications:
   • Doorbell transmitter:
     • Self-generated power supply
     • The receiver is placed in a wall outlet for 220 volts and therefore does not need batteries.
     • Power consumption: 0.25W
     • 38 ringtones
     • Weight: 29g
     • Transmission distance (open area): ≥150M
     • Working frequency: RF 433 MHZ
     • Dimensions: L67mmxW33mmxH18mm
     • Music volume: ≥50dB/1M
     • Working temperature: -20℃~+60℃
   • Door bell receiver:
     • AC100V-230V 50/60Hz
     • Weight: 56g
     • Dimensions: 85mmx52mmx43-63mm
     • Working frequency: RF 433 MHZ
     • Music volume: ≥50dB/1M
     • Working temperature: -10℃~+45℃

User instruction:

1. Mating: Follow the instructions to pair the transmitter with the receiver. A transmitter can be paired with up to 5 receivers.
2. Clear pairing code: Press and hold the receiver button within 1 minute after the receiver is turned on to clear all stored pairing codes.
3. Return to first music: Long press the “Volume Adjustment” and “Back” buttons when the receiver is turned on to return to the first music.
4. Choice of song: When the receiver is powered on, short press the “Pairing and Song Selection” button to cycle through the built-in 38 ringtones.
5. Volume adjustment: When the receiver is powered on, short press the “Volume Adjust and Return” buttons to adjust the volume between high, medium, low and silent mode.

Installation instruction:

• The transmitter can be positioned or moved as needed and can either be attached with double-sided tape or by screw mounting.

Fault analysis and troubleshooting:

1. No sound: Check if the receiver is plugged in and if it is in silent mode. Also check if the transmitter is correctly paired with the receiver.
2. Short transmission distance: Avoid placing the transmitter and receiver near metal objects or near walls and ceilings to avoid interference from other wireless devices.