Vortex HTO Haunted Trigger Object Detection System – RED UNIT
This Device can be attached to any metal object to be used as a trigger object. Like a EMF detector, it senses the touch and alarms letting us know that we have activity and gives a reference point during review.
Runs on a 9V battery, includes unit, connector chord and metal plate for trigger.
Link of use: https://youtu.be/ApFXoKFHvUw