Look no further. Great product quality， that's solidly built. Best of all， its very affordable price. Buy today.<br /><br />Material: ABS <br />Color: black <br />Dimension: 85 x 42 x 17 mm (LxWxH) <br />Operating voltage: 2 x 3V AAA (not included) <br />Working frequency: 433MHZ<br />Standby current: 100μA<br />Working current: 30mA<br />Alarm response time: 200MS <br />Static standby time: 8-12 months， related to the nature and quality of battery   <br /><br />1 x Door magnet <br />1 x English manual <br />In paper box<br /><img src="http://img6.eachbuyer.com/x9/p100/eb4108_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb4108_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb4108_3.jpg" />