Vender Ready Stock Wireless Doorbell，Ring Doorbell，No Battery Required，US EU UK Plug, IP68 Waterproof Welcome Bell Home Door Bell Smart Hom pick al mejor precio

Package Included: 1*Doorbell receiver 1*Doorbell transmitter 1*User Manual Specifications: specification: Operation Voltage: AC100-230V Power Consumption:0.25W Wireless Frequency:433MHz Operation Temperature:-10 - +45℃ Ringtone Volume:≧50db/m Wireless Distance:150 meters(Open space) Receiver Size:95*54*68mm Transmitter Size:80*50*28mm Transmitter Power Type:Self Power（No need battery） Description: Description： [ No Battery Required,Self Power Door Bell ] -No need extra battery for the Transmitter,press and transform kinetic energy into electric energy.then the transmitter release signal to active the door bell receiver.Save the energy to change battery and environment friendly. [ Strong Signal ] -Over 150 meters effective range and strong ability to penetrate wall,available for big house. [ IP68 Waterproof ] -Rainy days can be used ,safe &durable. [ One Transmitter can Pair with Several Receiver ] -no need worry miss the door bell ring of every important visitor [ 38 Kinds Ring Tons&4 Level Volume Adjustable ] -in total 38 kinds ring tons available,4 level volume adjustable,including mute.Fully satisfy your different requirement in different scene and room. [ Easy to Install ] -Transmitter button can be paste on the door via double side tape,or screw on the wall with the bottom plate. And the receiver bell can be plug in any home outlets. [ Pager for Vulnerable Group ] -it can be used as a pager for old people,kids,pregnant women,efficient and reliable.