[1 Transmitter with 2 Receivers] This wireless doorbell features a loud volume, 7-color light alert, and a long-range, one-touch call function. It's perfect for home use and allows for one-touch calling. The transmitter and receiver connect wirelessly, transmitting wireless signals. At the press of a button, the receiver plays beautiful music and flashes colorful lights, making it easy to hear and hear at night. Press the doorbell and you won't miss a call. Four adjustable volume levels allow for audible sound within a 150-square-meter radius. No matter the size of your house, you won't miss a single call. This eco-friendly, energy-saving design uses only 7 AA batteries—3 for each receiver and 1 for each transmitter. Easy installation: The doorbell is secure and wall-friendly. High-quality double-sided adhesive allows for simple, easy installation with a simple click, peel, and snap action. It's stable and wall-friendly, and can also be mounted with screws.