General description The Smart Self Powered Wireless Doorbell is a battery-free, waterproof device designed for ultra-long distance communication, boasting a wireless range of up to 200 meters. Its signal has excellent penetrating power, allowing it to easily pass through various materials, ensuring you never miss a visitor. Technical specifications Wireless range: 200 meters Plug Type: US Plug Voltage: AC 110V Receiver size: 7.8 x 5.4 x 2 cm Doorbell size: 6.6 x 4 x 2 cm Material: ABS Weight measurement error: +/- 1-3 cm Compatibility and accessories Compatible with various regions including Canada, India, Mexico, Thailand, and the Philippines Package Contents: 1 x Doorbell button, 1 x Receiver, 1 x Double-sided tape, 1 x English manual Usage 38 different chimes available for personalization 4 volume levels to suit your preference Automatically remembers the last set melody and volume after a power outage Mute mode functionality for privacy during quiet times Other information High