Wireless Doorbell Kit Coolqiya Door Bell Chime with 2 Waterproof Transmitters and 4 Plug-in Receivers for Home

Features: You can choose to buy additional receivers according to actual needs. To enjoy a perfect using experience, please pair transmitter buttons to receivers one by one for a new code By following steps: 1.Pick the sound you want on one of receivers. 2.Press and hold the volume button of the receiver till it blink with a "ding" sound, then push one of transmitter button within 5 seconds to pair with the receiver. Finally you will hear the music you set. 3.It is the same method to pair other transmitters with receivers. 4.Please check the above steps, if you did so and still failed to change the tune, please feel free to contact us, we will do our best to assist you. Application For big house/office/assisted living for elderly care or nursing residents; Blue LED flash indicator works well for the hearing impaired. Warranty Friendly customer service in 24hrs & 18 months warranty. What's Included: 4 * Receivers; 2 * Transmitters; 2 * 12V A23 Alkaline Battery in Transmitter 4 * Screws & Anchors; 1 * Mini Screw Driver 2 * Sticky Pads; 1 * User Manual