Wireless Door Bell， AVANTEK CW-21 Mini Waterproof Wireless Doorbell Operating at Over 1000 Feet， 2 R
<p><b>Color:</b> White</p><p><b>Features:</b> </p><ul><li>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</li><li>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</li><li>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</li><li>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; w...