Check the listing for details. Voltage Continuity Tester 3-phase Voltage Phase Rotation 12-690V Circuit Tester. Condition: New. Listed at 24.69 USD. BT-38A 690V Digital AC DC voltage meter phase rotation voltage display phase tester 🔥 【 Voltage tester two-pole】 BTMETER AC DC voltage tester can be used AC and DC voltage (including three-phase AC current measurement), three-phase AC power display phase, on/off test, continuity, RCD test, continuity test, phase rotation test, polarity detection and self-inspection. 🔥 【 Measuring range】 BTMETER BT-38A voltage tester can measure 12-690V AC/DC voltage, accuracy (23±5C): (3%+3) or 5V, range/resolution: 7-690V/1V (auto range) 🔥 【 Safety phase tester】 BTMETER 38A voltage tester features a low battery voltage indicator and a voltage display over the measured range, saves energy and is safe to use. Meets the safety requirements for double insulation, CAT III 690V, CAT IV 600V and CE.