タイトルまたは説明

Main features:
1. Stylish modern design fits into any home and office.
2. *2 ringtones(*6 chord)to choose from and 4 steps volume control(*5~**0dB).
3. Simple to use and easy-to-install without the hassle of running any wires.
4. With up to **0m operating range in open space,**0m audible range.
5. IP*5/IP*4 waterproof transmitter
6. Eye-catching backlight flashes when someone pushes the doorbell.
7. Different quantity of push unit(transmitter) and chime unit(receiver) are free to pair together.
8. If paired multiple push units in one system,the chime can be set to different for each push unit.
9. Using learning code to prevent interference from other wireless transmitters.