General description No batteries are needed for this innovative wireless doorbell, which utilizes unique PUSH-RF technology to convert kinetic energy into an electrical signal, allowing it to ring wirelessly. This doorbell is more convenient, energy-efficient, and practical than traditional models. It features a waterproof design and an LED temperature display, making it a versatile addition to your home. Technical specifications Waterproof rating: IP44 Operating temperature range: -20°C to 65°C Wireless range: 150M/500FT Volume levels: 4 adjustable levels from 0dB to 100dB Melodies: 38 different chimes Compatibility and accessories Includes 2 plug-in receivers Installation Simply tear off the film on the transmitter and stick it next to your door. Plug the receivers into power outlets. Usage Enjoy pleasant melodies every time someone rings your doorbell. The LED indicator provides a visual notification, making it suitable for the hearing impaired. The memory function recalls the last