Wireless Doorbell, 1300 ft Range, Waterproof, 2 Receivers, Black | 115 dB Volume, 52 Chimes, LED Flash, IP55 Waterproof Button, 3-Year Battery, Expandable Receivers, No Wi-Fi or Fees

HIGH PERFORMANCE TRANSMITTER: Ultra-low power consumption; utilizes a lithium battery with a maximum duration of 3 years; IP55 dustproof and waterproof; operating temperature ranges from -4 °F to 140 °F; withstands various harsh weather conditions. 1300 FT / 400
M WIRELESS RANGE: Contains 1 push button (transmitter) and 2 plug-in receivers; will not interfere with other equipment in your home or those of your neighbors; ensures you will never miss any visitors, even if you are several rooms away.
52 BEAUTIFUL CHIMES: 40 mm stereo speaker delivers rich and crisp sound; press the Next or Previous button to easily select from 52 melodies; 5 adjustable volume levels, with a maximum volume of 115 dB; enjoy pleasant melodies whenever someone rings at your door.
MEMORY FUNCTION: Retains your last set melody and volume level after a power outage; no need to reset to your previous settings; convenient and user-friendly design for an improved experience.
EASY TO SET UP: Additional RB-1/CR-1 plug-in receivers can be added to expand coverage; the package includes 2 screws, 2 anchor plugs, 1 key, and 1 adhesive patch for simple installation of the transmitter