Battery-Free Wireless Doorbell

Overview
*The Bluelasers Battery-Free Wireless Doorbell is a a breakthrough high quality technology product.
*Based on radio frequency and energy harvesting technology, battery-free wireless doorbell transmitter doesn't need external power supply nor embedded battery to control the receiver, easy use and installation.
*When press the button, the mechanical energy will automatically convert into electrical energy. Meanwhile, the transmitter will send out a radio signal to control the receiver.

Description:
*Communication Mode FSK (means no interference)
*Standby power ＜0.5W
*Color White / Gold / Silver
*Voltage AC 85~265V 50/60Hz
*Connectivity Range 30~50meters (be able to penetrate the wall)
*Operating Temperature -25℃ to +50℃
*Lifetime 200,000 clicks
*Transmitter Dimensions Φ70mm*15.5mm
*Receiver Dimensions 94mm*53mm*34mm
*Number of songs 48 songs(Default: Ding-Dong)
*Volume range 6 grade(including silence)
*Plug Type US, EU, UK standard

• Transmitter Maintenance-Free(No batteries required-powered by your touch)
• Fast, simple installation: No wire, no battery, no hassle
• No interference, Waterproof
• Freedom to place transmitter anywhere-on the wall near your door or other place
• Energy Saving-standby power＜0.5W, save money

Transmitter Maintenance-Free(No batteries required-powered by your touch)Bluelasers