【No Battery Required】 Wireless Doorbell Waterproof, AURTEC Door Chime Kit with 2 Plug-in & 1 Press Self-Powered Transmitter, 51 Chimes, 4 Volume Levels, Black

【BATTERY FREE】: Transmitter is converting the energy from finger press, two receivers are easy to get rid of the worry about changing batteries, more conveniently and more environment friendly.
【EASY TO INSTALL&USE】: Easily plug receivers into an electrical outlet. The push button can be fixed to the doorframe with the attached adhesive tapes.
【STRONG SIGNAL】: 150m/500ft Wireless Range. It’s ideal for large spaces which with several entranceways or multiple floors big house, office, hotel service and other areas. Never miss a visit or delivery.
【HIGH QUALITY AND DURABLE TRANSMITTER】: IP44 waterproof, none combustible ABS850 materials, 20 years operation life, -4℉~149℉ working temperature.
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