Argus, Argus pro, Argus2, Reolink Go.
If your camera fails to be triggered by motion. Please kindly take the camera down and follow below steps to check if the PIR works properly.
Step 1. Check the camera's date and time, make sure the date&time is correct. If it's not correct, please go to Set up Date & Time on Reolink App and set camera's date&time
Step 2. Check and confirm the below settings：
a. Make sure the PIR Sensor is ON.
b. Make sure PIR schedule properly configured
Step 3. Enable Siren. Wave your hand in front of the camera and check if the camera can be triggered. If you can hear alarm then it means your PIR is working properly.