Wireless Doorbell – Waterproof Door Bells and Chimes Wireless Kit – 36 Melodies- 6 Levels Adjustable Volume- Led Flash Indicator- 1 Push Button and 2 Plug-in Receiver

Technical specifications: Receiver Operating Voltage: AC 110V/220V Power consumption of transmitter <10mW Wireless Range: 1000 ft maximum (Open Space) Internal Sounds: 36 Melody Volume range: 6 adjustable levels (25db to 110db) IP44 weatherproof & dustproof casing for outdoor use Button working temperature: -7f to 140f Transmitter POWER : DC 3V (CR2032)  Package Includes:  1x Push Button  1x Doorbell Receiver  1x Double-sided Adhesive  1x Instruction Manual  1x 3V Battery for Push Button (Type: CR2032) Suggestions: 1. Please do not install the transmitter on the metal door. Metal door will interfere with the signal and shorten the transmission range. 2. Please place the receiver in areas away from refrigerator, microwave and other high-power appliances. 3. The transmitter is IP44 waterproof, but we recommend installing a waterproof cover for long-term use.