Wireless Waterproof Doorbell LED Light 300M Remote 2 Button 1 Receiver Calling Bell

Features:  1. Press the button, super learning code can freely learn to match, can be unlimited matching receiver.  2. The transmitter has no screw chuck design, and it can be waterproof and dustproof without rubber ring.  3. If multiple buttons are paired with one or more receivers in the same system, each button can be set to a different ringtone.  4. Power-off memory function: Turn the power on again after power off, no need to re-adjust and lock the ringtone.  5. The doorbell button use a 23A12V battery (not included) and the receiver voltage is 220v.  6. The receiver is available in a variety of plugs, US/EU/UK Plug and AU adapters, suitable for most countries.  7. Receiving distance:300 meters in open area.  8. Eye-catching backlight flashes when someone pushes the doorbell. Particularly suitable for the elderly, deaf.  9. The wireless signal will be affected by obstacles. The more obstacles, the more serious the signal loss.  10. Receiver has 5 levels(can be mute) 0-110db,60 mus