311B slim wireless ring doorbell

Advent plug-in wireless doorbells with battery-operated transmitter, ultra-low power consumption and CR2032 lithium battery gives a lifespan of up to 1  year, no need to worry in case power off. IP44 waterproof rating to withstand the harshest weather (-4 °F to 140 °F). Learn more features of our Mini wireless doorbell as below:

- This wireless doorbell kit is easy to install, just plug the door chime into a regular outlet, and install the battery operated bell push button with double-sided tapes or screws and anchors.

- The ring wireless doorbell is designed with universal input voltage, dual voltage of door chime is 110v-240v.
-Pick your favorite sound from 32 different musical chimes options with just the touch of a button (Westminster, ding dong, etc); Select the volume you prefer from four levels (50-85db)
- Operating range up to 150 metres on open air, which is applicable for villa, multi-story houses or big property.        

- Compact size design, save packaging cost and freight costs.

- Battery- operated bell push button with a 3V CR2032 battery, easily to get at local market.

- Memory function, the unit can remember the last status before turn off. When it's turned on, you don't need to reset the functions.