CACAZI C1 Smart Home Wireless Remote Control Doorbell, Style:EU PlugFeatures:1. The waterproof design of the transmitter effectively prolongs the service life of the product and is safe and secure2. The receiver has 52 chord music, which can be adjusted in 4 levels3. Long-distance barrier-free penetration of 300 meters, giving you a better experienceProduct parameters:1. Material: ABS, electronic components2. Power supply mode: AC3. Power supply voltage: 110220 (V)4. Receiver: with indicator light, button, and light on5. Transmitter: 12V 23A battery x 1 (delivered with battery)6. Music selection: 52 music7. Volume selection: 4 levels of volume adjustment8. Power consumption: 1 (W)9. Scope of application: 300m10. Dimensions: Transmitter: 6 x 3.4 x 1.5 cm, Receiver: 8.1 x 8.1 x 2 cm