Martindale-VT25-Voltage-Tester-&-PD690-Proving-Device-Martindale-VT25-p-The-Martindale-VT25-is-a-tough-compact-two-pole-tester-for-measuring-AC-DC-voltages-from-12-to-690V-Additional-capabilities-include-continuity-&-phase-rotation-testing-plus-single-pole-voltage-detection-p-p-The-AC-DC-voltage-detection-continuity-&-phase-rotation-functions-all-have-bright-LED-indication-Auto-power-off-ensures-a-long-battery-lifetime-The-voltage-indicator-conforms-to-all-the-latest-safety-sta