The wireless doorbell adopt advance wireless receiving and dispatching technology, powerful microcomputer control system, high capacity and superior voice processing technology, up to 32 with reliable and stable performance. 32 music for option, Our doorbell receiver will sound loud and clear music when triggered, and you can select the freely to avoid the same rings with your neighbors 4 Levels volume adjustable,The volumes can turn up or turn down with bright LED lights, more suitable for your different needs. Long transmission distance,Our doorbell equipped with strong penetration and long signal,the operation range can reach to 150meters(500ft) in open area. Plug Type :EU Plug,it applies to Indonesia, Germany, France, , Italy and so on. Style:A one pallet Two sets Colour:White Material:ABS Size:9.3 x 5.9 x 3.5cm Voltage: AC100-240V Package Contents: 1 * Host 2 * button Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.