The P70 Six-O-Lite pocket electric fence tester not only shows if there is power on the line but also the strength/voltage.
Pocket Electric Fence Tester
Deluxe Electric Fence Tester and Fault Finder.
The Gallagher i Series Remote Control accurately measures fence voltages and current and finds the exact location of a fence fault quickly and easily.
An ideal electric fence tester with digital volt meter is an easy to use, self earthing, digital fence tester for testing all kinds of electric fencing with voltages of up to 9,900 volts (9.9kv).