The transmitter is IP44 waterproof, operates from -14°F to 45+°F, and can withstand all types of harsh weather conditions.
Press the doorbell with your finger and the energy is converted into electricity, instantly transmitting a wireless signal without the need for batteries. This self-powered doorbell has 1 transmitter (button) and 2 receivers (chimes) that require no batteries
433MHz wireless signal, strong penetration, can penetrate 3-4 doors, open area reception distance up to 150 meters. There are 38 ringtones to choose from, 3 adjustable volume levels, and the maximum volume setting is 100dB
no batteries, no wiring, fixed with screws, low power consumption, easy to use, save time and labor.
2 plug-in receivers, 1 button, 1 door plate, 1 set of screws and 1 double-sided tape, fully installed in 30 seconds. Simply plug the receivers into the power supply, plug and play!
Wireless doorbell, self-powered, no batteries required, cordless doorbell kit, 150M range