This product is Aqara intelligent motion sensor, the built-in high-precision acceleration sensor will report the abnormal situation to the gate-way when it senses the abnormal vibrating, tilt or fall of the object. The linkage gate-way will send the local sound and light warning signal, and push the warning message to the mobile APP remotely, so that you can know in time.Features:Can sense three states: vibrating, tilt, fall.Applicable to a variety of scenarios: hall, balcony door monitoring; Window glass monitoring; Valuable painting and calligraphy monitoring.It provides high, medium and low sensitivity, which can adjust the appropriate gear according to different installation environment, improve detection sensitivity and effectively reduce false alarm.With other intelligent accessories, more intelligent scenes can be realized. For example, it automatically lights up after sensing vibrating and sends sound and light reminders after sensing tilt.Small size and easy to install, can be installed in a variety of scenarios as needed. The cover is made of PC+ABS material, which is not easy to change color after long-term use.Specifications:Item type: Motion SensorModel: DJT11LMMaterial: ABS+PCQuantity: 1PC, 2PCS, 4PCS, 8PCS(optional)Wire-less connection: ZigbeeOperating temperature: -10~+50Operating humidity: 0~95% RHPackage weight: 1PC: 55g/1.94ounces 2PCS: 110g/3.88ounces 4PCS: 220g/7.76ounces 8PCS: 440g/0.97poundsPackage size: 1PC: 90*70*50mm/3.54*2.75*1.96inches 2PCS: 100*90*70mm/3.93*3.54*2.75inches 4PCS: 200*100*90mm/7.87*3.93*3.54inches 8PCS: 400*150*100mm/15.7*5.9*3.93inchesPackage list:1 * Motion Sensor