In the monitoring system, does each camera need a three-in-one or two-in-one lightning arrester?

1, 2-in-1 lightning arrester should be installed outdoors and grounded.

2. The power supply at the main power supply of the monitoring room shall be provided with three-level lightning protection.

3. Install a video signal arrester in front of the video recorder.

4. It is best to install a power terminal protection in front of the video recorder.

5. Equipotential bonding and grounding should be done for power lines and signal lines entering and leaving the monitoring room.

6. The metal shell of monitoring indoor equipment should also be grounded.

All of the above need a good grounding. For complete protection, there must be primary and secondary protection before the tertiary power supply.