Product: Wireless Door Bell, AVANTEK CB-21 Mini Waterproof Wireless Doorbell Operating at Over 1000 Feet, 2 Remote Buttons Can Have Different Tones, 52 Melodies, CD Quality Sound and LED Flash
Brand: AVANTEK
Color: Black
With superior performance and ultra-low power consumption, the AVANTEK CB-21 Wireless Doorbell stands out among rivals. It is the easiest and most convenient choice for homes, office buildings, hotels and more. 
 
 Long Operating Distance 
 
The doorbell supports an extensive 1,000-ft working range (depending on the operating environment). Rest assured that you’ll never miss any important guests or urgent deliveries again with the help of this doorbell. 
 
 Durable and Waterproof Transmitter 
 
The built-in 230 mAh CR2032 lithium battery has an ultra long three-year lifespan, saving you the annoyance of frequent purchases and replacements. The impressive IP55 dustproof and waterproof rating makes the transmitter tough enough to withstand various outdoor environments. And with a working temperature ranging from -4 °F to 140 °F, the transmitter can work for you in even the harshest weather conditions. 
 
 Music to Your Ears 
 
A wide selection of 52 melodies allows you to easily choose one to suit your preferences - enough for a new tune every week of the year, so you will never get bored with your doorbell’s chimes again. It is easy and simple to choose your favorite melody with the use of the Next and Previous buttons. You can also set a different ring tone for each transmitter, so you will know exactly which doorbell has been rung. In addition, the built-in 40 mm stereo speaker delivers clear and well-balanced sounds. 
 
 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 remembers 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.
EASY TO SET UP: 2 transmitters included; can add more AVANTEK Mini receivers for increased coverage; simply fix the transmitter on the wall without any wiring; includes 4 screws, 4 anchors, 1 key and 2 double-sided adhesive pads
300 M/1,000 FT ULTRA LONG WIRELESS RANGE: 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 floor
TAILOR YOUR TRANSMITTER: 1.1 in (29 mm) stereo speaker delivers rich and crisp sound; 52 melodies and 5 adjustable volume levels with a maximum setting of 115 dB; set a different ring tone for each transmitter so that you know exactly which doorbell has been rung
HIGH PERFORMANCE: The transmitter has ultra-low power consumption; uses a CR2032 lithium battery that boasts 3-year maximum lifespan; IP55 dustproof and waterproof rating; works between -4 °F to 140 °F; withstands various harsh weather conditions
MEMORY 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 experience

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