ALLOSUN GK503B NEON Electric Fence Voltage Tester and Fault Finder Max 7 Kv, NOT
GK503B Neon Fence Tester. Model： GK503B. Just hang it on the fence and stick the probe in the ground under the fence. As such, the light will never be bright, due to the technology of the bulbs. Keep one on hand for regular fence line.