General description No more worrying about batteries with our Wireless Doorbell. Utilizing unique PUSH-RF technology, this doorbell converts kinetic energy into an electrical signal, allowing it to ring wirelessly. It is more convenient, energy-saving, and practical than traditional doorbells. The doorbell features 45 beautiful chimes and melodies, adjustable volume control, and an LED indicator for visual notifications, making it suitable for everyone, including the hearing impaired. Technical specifications Waterproof rating: IP44 Operating temperature: -20℃ to 65℃ Wireless range: 150M/500FT Volume levels: 4 adjustable levels from 0dB to 90dB Compatibility and accessories Includes 2 plug-in receivers Installation Stick the doorbell next to your door using the included double-sided tape or mount it on the wall with screws Plug the receiver into a power outlet Usage Ideal for home, office, hotel, villa, hospital, study, apartment, school, and other suitable fields Ensures you never