Wireless Doorbell， Ecandy Waterproof Remote Wireless Cordless Doorbell Door Chime Operating at 1000-feet Range with 52 Chimes， No Batteries Required for the Receiver<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Work up to 900 feet maximum (best condition without any obstacles)</li><li>52 chimes to select and 4 volume levels to alert; plenty selections offered</li><li>Battery operated transmitter / push button; Wall plugged receiver; Receiver size:3.1*1.1*3.4mm; Transmitter: 2*0.7*2.8mm</li><li>Easy installation， plug and play: Wire free and environment friendly， plug in socket and function normally.</li><li>Radio distance reach 300 meters: Use advanced electronic technology， the wireless distance can reach 300 meters， more free and more convenient</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51oTa80puAL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/61phKNgs2hL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41%2BzJAdMBmL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51UAF00LUpL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51b9KM73yfL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/411T5YsmEqL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51t3ASLIWtL.jpg" noproxy>