『No Battery Required』AURTEC Wireless Doorbell,Waterproof Door Chime Kit with 1 Press Self-Powered Transmitter & 1 Plug-in Receiver,51 Chimes,4 Volume Levels,No Battery Required,White

• 【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.
• 【MULTIFUNCTIONAL RECEIVERS&SERVICE】: 51 chimes, 4 volume levels, power plug, invisible LED indicator.2-Year friendly customer service. Please feel free to contact us anytime.
• 【BATTERY FREE】: Transmitter is converting the energy from finger press, the 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.

AURTEC self-powered Wireless Doorbell Kit no battery required with 1 transmitter and 1 receivers for home. 2-Year warranty and friendly customer service. PRODUCT FEATURES: 1.Battery free design, more environment friendly. 2.Long remote distance, open area transmission distance is up to 150m/500ft. 3.IP44 waterproof transmitter. 4.Low power consumption, long service life. 5.Easy installation, easy to use. 6.No interference to or from other wireless doorbell. What's in the Box: 1 x Transmitter 1 x Receivers 2 x Double-sided Adhesive Sticker