AVANTEK Wireless Doorbell 1000 ft Range 1 Button + 2 Receivers White

100% SATISFACTION: Our AVANTEK wireless doorbell is approved by FCC, CE and RoHS; we provide customer service on our products and we will always do our best to support you.HIGH PERFORMANCE TRANSMITTER: Ultra-low power consumption; uses a lithium battery that boasts 3 year maximum lifespan; IP55 dustproof and waterproof; working temperature ranges from -4 °F-140 °F; withstands various harsh weather conditions1000 FT ULTRA LONG WIRELESS RANGE: 2 plug-in receivers included; will not interfere with other equipment in your home or those of your neighbors; ensures you will never miss a visitor, even if you are a few rooms away or on another floor52 CHIMES TO CHOOSE FROM: 1.1 in (29 mm) stereo speaker delivers rich and crisp sound; 5 adjustable volume levels with a maximum setting of 115 dB; press Next or Previous button to easily choose from 52 melodiesMEMORY FUNCTION: Remembers your last melody and volume level after a power outage; no need to reset to your previous settings; convenient and easy-to-use design for an enhanced user experienceEASY TO SET UP: Can add more AVANTEK CR-1/RB-1 plug-in receivers for increased coverage; includes 2 screws, 2 anchors, 1 key and 1 adhesive patch for easy installation of transmitter