[No Batteries Required] Wireless Doorbell with LED Temperature, Waterproof Door Bell Electronic Chime Kit with 2 Plug-in Receivers, 150M Range, 38 Melodies at 4 Volume Levels

General description No Battery Required: Our wireless doorbell transmitter uses unique PUSH-RF technology. When you press the button, the kinetic energy is converted into an electrical signal that rings your doorbell wirelessly. No more worrying about batteries. More convenient, energy-saving, and practical than traditional doorbells. Technical specifications IP44 waterproof design Operating temperature: -20℃ to 65℃ Wireless range: 150M/500FT Volume levels: 4 adjustable levels from 0dB to 100dB 38 melody chimes available Compatibility and accessories Includes 2 plug-in receivers Installation Easy installation: Tear off the film on the transmitter and stick it next to your door Plug the receivers into power outlets Usage LED temperature display shows Celsius/Fahrenheit when the receiver is not ringing Ideal for home, office, hotel, villa, hospital, study, apartment, school, and other suitable fields All wireless doorbells can be re-paired and controlled together