This product adopts advanced manufacturing technology. It has body sensing， high performance， energy-saving functions<br>Monitoring human movement with in certain scope<br>Suitable for office， home， shop， factory and other places<br>You can stick the door bell anywhere you want with the double-sided adhesive sticker<br>Fasten the door bell on the wall， wood board， aluminum board etc.by using the screws<br>Color: White<br>100% Brand New<br>Volume is adjustable.<br>Alarm Sound: 75-95 decibels<br>16 kinds of melody music<br>Battery: 3 AAA / 1.5V batteries (batteries are not included)<br>Effective Alarming Detecting Distance: Approx. 2-8 meters<br>DC 9V (can connect with a DC adapter wall charger directly， charger not include)<br>Power Switch: 10 seconds delay<br>Effective Angle:<br>Left and right: 110 degree<br>Up and down: 45 degree<br>1 x Doorbell<br>1 x Accessories bag<br>1 x Double sides adhesive tape<br>In blister package<br /><img src="http://img6.eachbuyer.com/x23/p30/bt295_4.jpg" />                                                        <img src="http://img6.eachbuyer.com/x23/p30/bt295_5.jpg" />                                                        <img src="http://img6.eachbuyer.com/x23/p30/bt295_6.jpg" />                                                        <img src="http://img6.eachbuyer.com/x23/p30/bt295_7.jpg" />