AVANTEK Wireless Doorbell Waterproof Door Bell Chime Operating at over 1300 Feet Classroom Doorbell with 52 Melodies CD Quality Sound and LED Flash 1 Button 2 Plugin Receivers D3W

HIGH PERFORMANCE TRANSMITTER Ultralow power consumption uses a lithium battery that boasts 3 year maximum lifespan IP55 dustproof and waterproof working temperature ranges from 4 F140 F withstands various harsh weather conditions 1300 FT 400 M WIRELESS RANGE Includes 1 push button transmitter and 2 plugin receivers will not interfere with other equipment in your home or those of your neighbors ensures that 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 choose 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 Preserves your last set melody and volume level after a power outage no need to reset to your previous settings convenient and easy to use design for a better user experience EASY TO SET UP Additional AVANTEK RB1CR1 plugin receivers can be added to enhance coverage the package includes 2 screws 2 anchor plugs 1 key and 1 adhesive patch for easy installation of the transmitter.