This is a Gallagher electric fence tester, but it's no longer working. More info in comments. : r/AskElectronics

Gallagher Fault Finder Smart Fix Repair & Battery Reset

Gallagher Fence Testers, G50405

Gallagher Smartfix Fault Finder Tester

Fence Testers 101/What's Wrong With My Fence?

INSTANT REASSURANCE YOUR ELECTRIC FENCE IS WORKING - Place the Gallagher Electric Fence Indicator permanently on your fence line and simply look for

Gallagher Live Fence Indicator | Detects Electric Fence Energizer Pulse | Visible LED Light Indicator Alert Device That Clips to Wire or Tape Fences

Gallagher Fault Finder

GREAT TIME SAVER - By using the Gallagher Digital Volt Meter you'll save hours diagnosing shorts and faults. The volt meter reads the voltage for

Gallagher Fault Finder | Identify & Locate Electric Fence Faults | Tough Pocket Size Digital Reader with Extendable Voltage Probe | 3-in-1 Device

i Series Energizer Remote and Fault Finder

Gallagher Fault Finder

How to use an Electric Fence Fault Finder

Fence Testers 101/What's Wrong With My Fence?

Gallagher Live Fence Indicator

How To Test A Broken Electric Fencer And Repair It

Electric Fencing 101: Installation & Troubleshooting Easy Problems

How To Troubleshoot A Gallagher Electric Fence Energizer