1 to 3 Creative Door Bell 3 Volume Adjustable 30 Songs Wireless Piano Doorbells Water Resistance Electronic Remote Control for Home Office   <br /><br />Main Features:<br />? Practical water resistance wireless door bell for daily life <br />? Noble piano simple design， you can insert it at any place and free move<br />? You need not to worry about the mutual interference with your neighbors forever<br />? Easy to install and no electrical wires to install<br />? 30 melodies: Built-in stereo music， elegant music or custom music<br />? 3 level volume control， special high fidelity music chords， selected from the world classical music<br />? Only need to use the battery， convenient to use<br />? Receiver: Size 10.6 x 2.8 x 7.2， powered by 12V 32A battery (included )<br />? Transmitter: Size 8 x 1.8 x 4.5， powered by 2 x AA battery (not included)<br />? Outdoor Remote Control Distance: About 100 - 150 meters(open outdoor environment) <br />? Indoor Remote Control Distance: About 80 meters(indoor controlled environment)<br />? Perfect for home， office， hotels， jewelry store， etc.<br /><br /><br /><br /><br /><br /><br /><br /><br /><br />    Specifications<br />Dimension and Weight<br />	 Product Weight: 0.160 kg                                                  <br />                        Package Weight: 0.520 kg                                                  <br />                        Package Size ( L x W x H ): 35 x 15 x 10 cm / 13.76 x 5.90 x 3.93 inches                                                	<br />Package Contents<br />	 Package Contents: 3 x Receiver， 1 x Transmitter， 1 x 12V 32A Battery， 1 x Adhesive Sticker                                                	<br /><br /><br /><br />                                                <br />