General description The 300M IP55 Waterproof Electronic Wireless Doorbell features a minimalist design and is easy to operate. It is waterproof to IP55 standard, ensuring durability in various weather conditions. Technical specifications Wireless signal coverage: 300m Transmitter battery life: up to 3 years Volume: 100dB (adjustable to 0dB) Ringtones: 55 different options Adjustable volume levels: 5 Installation Wireless installation: button is fixed to the outside wall Receiver plugs into a socket for immediate use Usage Designed for the hearing impaired and the elderly with a loud doorbell and flashing LED Can be set to silent mode (0dB) to avoid disturbances Expandable system: add additional receivers and transmitters of the same model Other information 24-month warranty for peace of mind