ALLOSUN GK503B LED Electric Fence Voltage Tester Max 7 kV, Red Helpful for finding fence line faults Test voltage levels on your fence line and fence controller LED neon lamps indicates voltage levels from 0.6kv to 7kv (600 volts to 7000 volts) Keep one on hand for regular fence line maintenance allsun fence tester can be matched to any animal control situation, offering both budget and design flexibility