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 Plug-in Receivers, D-3W

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 conditions

1300 FT / 400 M WIRELESS RANGE: Includes 1 push button (transmitter) and 2 plug-in 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 RB-1/CR-1 plug-in 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

With superior performance and ultra-low power consumption, the AVANTEK D-3W Wireless Doorbell stands out among other doorbells. It is the easiest and most convenient choice for homes, office buildings, hotels and more. Durable and Waterproof Transmitter The built-in 230 mAh CR2032 lithium battery has an ultra long three year lifespan, saving you the annoyance of frequently buying and replacing batteries for your doorbell. The impressive IP55 dustproof and waterproof rating makes the transmitter tough enough to withstand various outdoor environments. What’s more, with a working temperature ranging from -4 °F-140 °F, the transmitter can work for you in even the harshest weather conditions. Various Pleasant Chimes A wide selection of 52 melodies allows you to easily choose one to suit your preferences. You will never get bored with your doorbell again! It is easy and simple to choose your favorite melody with the use of the Next and Previous buttons. In addition, the built-in 40 mm stereo speaker delivers clear and well-balanced sounds that are sure to please you. Long Operating Distance The doorbell supports an extensive 1300-foot working range (depending on the operating environment). Rest assured that you’ll never miss any important guests or urgent deliveries with the help of the doorbell. Innovative Memory Function One of the great advantages of the AVANTEK Doorbell is its memory function. Every time you turn on the device after a power outage, it will still maintain your last set melody and volume level. This makes it not only extremely convenient, but also very user-friendly. Note: Metal will interfere with the signal and shorten the transmission range. Please place the transmitter in areas away from metals.