When the body is within proximity, the alarm will automatically activate with high sensitivity within a range of 4-5 meters. Place or mount the alarm at a suitable height. Within a 5-meter range and a 120-degree horizontal angle, the device will detect movement from people or animals and trigger the alarm. Monitoring and detection: After activation, it can transmit signals via communication tools. After a few seconds, audio from the surrounding 15-meter area can be clearly received. Operating frequencies: 850MHz, 900MHz, 1800MHz, 1900MHz Working current: 10mA Standby current: 0.05mA Voltage: AC 100-240V Plug type: EU Plug, compatible with countries such as Indonesia, Germany, France, Italy, and others Color: Black Material: Plastic Package Contents: 1 x Mini GSM Motion Sensor Only the above items are included; other accessories are not included. Note: Due to light reflection and differences in display screens, the color in the image may slightly differ from the actual product. Measurement error allowance is +/- 1-3 cm.