Waterproof Wireless Doorbell Kit with Small Blue LED, 51 Melodies, 4 Volume Levels, 1 Transmitter and 1 Receiver, Black

【BATTERY FREE】Transmitter converts finger press energy, two receivers are easy to get rid of worry about changing batteries, more easily and more environmentally friendly.
【EASY TO INSTALL AND USE 【USE】Easily plug the receivers into an electrical outlet. The push button can be attached to the door frame with the attached adhesive tapes.
【SIGNAL STRONG】150m / 500ft wireless range. It is ideal for large spaces which with multiple entrances or multiple floors large house, office, hotel service and other areas. Never miss a visit or delivery.
【HIGH QUALITY AND DURABLE TRANSMITTER】IP44 waterproof, no ABS850 material combustible, operation life of 20 years, working temperature of -4 ℉ ~ 149 ℉.
【MULTIFUNCTIONAL RECEIVERS AND SERVICE】: 51 chimes, 4 volume levels, power plug, no LED indicator light. 2 year warranty and customer service friendly. Please feel free to contact us at any time.