★ IMPORTANT TECHNICAL KNOWLEDGE : The push button has the solar panel with built-in chargeable lithium battery, No need change the battery. It takes 70 hours sunlight illumination to be fully charged. The fully charged lithium battery will work at least two years.

★ DOORBELL KIT: 1 push button (transmitter) and 2 AC door chimes (receivers) - WIRELESS RANGE : up to 1000ft in open area;

★ ABOUT THE RECEIVER : No batteries required for the receiver. Simply plug it into a power outlet (120V US Standard); Over 50 different chimes. 4 levels of adjustable ringing volume from 30~110 dB; ABOUT THE TRANSMITTER : Remote transmitter button is Solar Charger Panel with Built-in Lithium battery - NO battery Required ; IP44 Push button Weatherproof acceptable for outdoor use.

★ EASY INSTALLATION: Push button/Transmitter can be fixed to the door frame with the screws provided, or attached to the wall using double-sided adhesive tapes outlet in your home

★ PACKAGE INCLUDED: Includes 2 x receiver (AC Plug-in) and 1 x transmitter , 1 x double sided sticker, anchors, screws; WARRANTY TERM: One year Manufacturer Warranty.