Transient protection for analog cameras
4 channel transient protection. To be used if the DVR and camera is not being supplied from the same power supply.
An overly overlooked accessory for surveillance camera, but it's extremely important to make sure that imbalances in supply does not overload DVR and cameras.
Especially if the camera has its own power supply and the DVR machine also has its own, but at high risk of power surges can damage single or multiple channels of monitoring equipment.