25 Tunes Wireless Cordless Digital Doorbell Remote Door Bell Chime No need battery Waterproof EU/US/UK Plug 110-240V White |

Product List: A doorbell transmitter A doorbell receivers A double-sided adhesive Since the power to use environmentally friendly technology doorbell button transmitter without battery without power. Press the launch button mechanical energy into electrical energy generated by transmitting radio signals without the use of batteries, no power, no wiring, no longer have to worry about the transmitter battery is low, do not worry about buying a doorbell battery run around, not only the doorbell longer life, but also to avoid battery pollution, truly green. First, easier to install, easier to use 1. No wiring, no batteries, power supply, easy to install 2. The emitter paste the outdoors, you can use the receiver plug Second, the superior performance 1. Long distance transmission, the signal can penetrate walls and Layer 3 security doors 2. The transmitter is waterproof, sealing strong 3. The service life of up to 10 years 4. learning coding, low crosstalk to one of four billion stars, do not worry about the string of bells 5.25 polyphonic ringtones, built-in amplifier, the better 6. The relay functions for signal relay, without fear distance Third, randomly paired You can mix and match a drag, more and more care, learning coding, matching a simple, self-pairing coding (Without Original Packaging )