Mini PIR Alert Sensor Description: 1. Switch on: Open the card holder cover, insert the into the card holder according to the instructions and it will automatically power on. When power on, the indicator light is on for 3 seconds. After the indicator light is off, close the cover. The alarm cat will enter the monitoring and sensing state about one minute after the machine is turned on. Information to the bound number 2. Number setting: 5 seconds after dialing the connection with a communication tool such as a mobile phone, the machine will automatically connect to hear the call voice, and the operation is very simple. 3. When the products range senses that the human body is ping back and forth, the product will call the bound number, and the sensor head will enter the function sensing state after one minute of power-on, and the sensing trigger will flash LED 4. Charging indicator changes: When the host is charging, the charger light is red, and when it is fully charged, the light will turn ylow. 5. Working frequency: MHZ, 900MHZ, 1800MHZ, 1900MHZStandby time: 5-7 days standby with human induction, 15-20 days standby without inductionFunction introduction and use method: 1. When the human body approaches the alarm cat, it will automatically detect the human body signal and turn on the automatic dialing 2. High sensitivity within 4 meters 3. Wiress is easy to install and can be used indoors, finance room, master room, childrens room, warehouse, hospital, etc. wherever security is needed 4. Designed with wiress communication technology, low power consumption, long standby time, accurate alarm, no false alarms, no random reports 5. When installing, place or paste the alarm cat at a certain height, aim at the place where the human body walks, and the distance is within 4 meters from the human body. The alarm cat can sense the human bodys walking within 120 of the left and right angle range. Or the animals are shaking back an