If your camera does not turn on when using a PoE switch or PoE power supply, you can follow these tips to resolve the problem.
Step 1: Check whether the camera is compatible with the PoE switch /PoE feeder
Check what type of PoE switch or PoE power supply you can use for your camera. Ensure that the specifications of the PoE switch or PoE injector are correct.
Step 2: Check that the camera is fully connected to the PoE switch /PoE injector
Check the PoE port indicator on the PoE switch or PoE injector. If the indicator is not on, you can plug the camera into another port and try using another Ethernet cable. Ensure that the PoE port on the switch is not rusty or damaged. It can be proved by replacing other good PoE ports.
Step 3: Check whether the PoE module of the camera is powered on
If the PoE module cannot be powered, use a DC adapter with the correct output voltage to power the camera. Make sure the DC/AC adapter is available. In general, the adapter has an indicator light that can be used to determine whether power is being supplied. Some network cameras with DC/AC power ports support DC12V/2A and AC24V /3A power supplies. Ensure that the adapter specifications are consistent with those of the camera.