General description The wireless doorbell features a working distance of up to 300 meters in open areas, ensuring a strong and stable wireless signal. With 60 different tones and an adjustable volume ranging from 0 to 110 dB, you can easily customize your doorbell experience. The system includes two receivers and a waterproof transmitter, making it suitable for outdoor use. Technical specifications Working range: 300 m Volume levels: 5 Ringtones: 60 Color: black Transmitter battery: 12V 2300mAh Operating temperature: -20 ℃ to +60 ℃ Plug specifications: European style Installation Plug the receiver into a power outlet. Use the provided screws or adhesive strips to attach the transmitter to an outdoor wall. No need to reset the tone and volume after a power outage. The socket receiver is compact and will not block other sockets. Usage The transmitter should not be installed on metal doors. Keep the receiver away from electrical equipment with strong electromagnetic radiation (TV,