* Batteryless, safe and economical

* Wireless, no need to install wire on the wall. Easy to install, you can stick the transmitter anywhere at will. And plug the receiver into a standard wall outlet

* 4 volume levels with Max105dB to adjust

* With different 38 tones to choose from  

* IP67 level at waterproof, it is suitable for outdoor use

* Transmitter service life: UP to 200,000 times

* Benefited from patented "Worm gear micro-energy generator",the pressure of the transmitter only need 350g

* Transmitter and receiver communicate as far as 30 meters from each other when indoors/80 meters from each other when outdoors

* Products passed quality certification that meets worldwide standard: CE certificate & ROHS certificate & FCC certificate

*  Eye-catching backlight flashes when PET pushes the doorbell. Particularly suitable for the elderly, deaf