311B portable wireless melody doorbell

Our hot-selling mini wireless doorbells are come with addtional features such as 4 volume levels adjustments, 32 stereo ringtonges, can work with 8 bell oush button, no matter battery-operated or kinetic bell push button all works. Beyond that, it's also compatible with our PIR motion sensors, door sensors or WiFi wireless doorbell. It add great convenience and security to your home. See more features as below:

- Doorbell chime is plug-in with universal plugs, dual input voltage of 110-240V. Those mini wireless doorbells are very small in size and less in weight, so that to save your freight charge, and it's very applicable, wont' occupy extra socket.

- No battery operated bell push button, which lifetime is as long as 20,0000 presses.

- Operating range up to 150 metres on open air, which is applicable for villa, multi-story houses or big property.        

- The transmitter is waterproof IP44, better suited to bearing up under adverse conditions.                                         

- 32 sounds selectable on chime,4 level volume adjustable, maxmum sound is 85db.

- Self learning codes avoid any interference with other equipment in your home or those of your neighbors.