Main Features:<br />Wireless vibration sensor detector for security<br />90db alarm sound， warning you the dangerous<br />Magnetic control alarm system<br />2 AAA battery are needed (Not include in the package)<br /><br />    Specifications<br />General<br />  Model: JD-188                                                  <br />                        Special function: Wireless vibration sensor， high sensitivity                                                  <br />                        Type ( Alarm Systems ): Door window alarm                                                 <br />Main Panel Specifications<br />  Operating Temperature (°C): 0 - 40                                                 <br />Infrared Detector Specifications<br />  Power Supply: 3V                                                  <br />                        View Angle (degree): 180                                                 <br />Dimension and Weight<br />  Product weight: 0.020 kg                                                  <br />                        Package weight: 0.045 kg                                                  <br />                        Product size (L x W x H): 9.10 x 3.10 x 1.90 cm / 3.58 x 1.22 x 0.75 inches                                                  <br />                        Package size (L x W x H): 18.00 x 8.00 x 3.00 cm / 7.09 x 3.15 x 1.18 inches                                                 <br />Package Contents<br />  Package Contents: 1 x Wireless Alarm System， 1 x Magnet， 2 x Double-side Tape ( Large and Small )                                                 <br /><br /><br /><br />                                            <br /><br /><br /><br /><br /><br /><br /><br />                                                <br />