When the body is near,it will automatically start the alarm,The highest sensitivity in the range of 4-5 meters Put or paste the alarm in a certain height, within 5 meters within the angular range 120 degrees left and right, as long as people or animals, swaying back and forth in a very short time, induction starts. Monitoring and Interception - After turning on, it can be connected by communication tools. And for a few seconds after through, you can hear clearly the situation 15 meters area around. Operation frequency:850MHZ,900MHZ,1800MHZ,1900MHZ Working current: 10mA Idle current: 0.05mA Voltage:AC100-240V Plug Type:EU Plug,it applies to Indonesia, Germany, France, , Italy and so on. Colour:Black Material:plastic Package Contents: 1 * Mini GSM Motion Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!