Look no further. Remarkable product quality, that's solidly built. Best of all, its very affordable price. Buy immediately.<br />Detecting method: dual PIR + MW<br />Detecting distance: diameter 10 m<br />Detecting angle: 360°<br />Infrared region: 44<br />Microwave rate: 10.525GHz<br />Installation: ceiling mounted<br />Working voltage: 9-16V DC<br />Working current: 8-25mA<br />Anti EMI: >10V/M, 10 MHz-1000 GHz<br />Tamper-proof: NC<br />Anti light interference: >9000LUX<br />Alarm output: relay NC<br />Dimension: 85 x 62.7 x 51.4 mm<br />1 x Detector<br />1 x User manual<br />In original package<br /><img src="http://img6.eachbuyer.com/x13/p83/bf138_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x13/p83/bf138_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x13/p83/bf138_3.jpg" />                                                        <img src="http://img6.eachbuyer.com/x13/p83/bf138_4.jpg" />