HT100P Non Contact 3 Phase Rotation Indicator AC Voltage Detector Pen Tester Right Left Normal Reverse Rotation Pencil The portable pen shaped AC phase & voltage detector can measure the phase sequence and detect AC voltage in 12V1000V and 48V1000V. It features a safety non-contact design, adjustable sensitivity, sound and light alarm, LED lighting, easy operation, and high accuracy. This is a professional device for electrical technicians and industrial electricians to handle wiring and cabling. Features: NCV High/Low Sensitivity Adjustable: Dual sensitivity AC voltage range of 12V1000V (high sensitivity) and 48V1000V (low sensitivity) with S button switching. AC Voltage Detection: Detect AC voltage by contacting the power socket or approaching the live wire with the non-contact tip. NCV Phase Sequence Detection: Designed with phase sequence measurement function. LED Illumination: Built-in flashlight for auxiliary lighting, convenient for use in dark areas or at night. Other Functions: Breakpoint checking, high voltage circuit alarm, live wire measurement, and full wire measurement. Auto Power-off: Automatically turns off after 3 minutes of inactivity or when no AC voltage is detected. Power Supply: Powered by 2 AAA batteries (not included), with low battery indication. Specifications: Material: ABS Dual Sensitivity AC Voltage Range: 121000V (high sensitivity) / 481000V (low sensitivity) (switchable via S button) NCV Detection Voltage Range: 121000V, 50/60Hz Phase Detection Voltage Range: 90400V, 50/60Hz Safety Compliance: CAT.IV 600V, CAT.III 1000V Operating Temperature: 0C to 40C Storage Temperature: -10C to 50C Humidity: Up to 95% RH Altitude: Up to 2000m Power Supply: 2 x 1.5V AAA Battery (not included) Item Size: 158 x 24 x 20mm / 6.22 x 0.94 x 0.79in Item Weight: 32g / 1.17oz Package Weight: 52g / 1.85oz Package Size: 16.5 x 3.5 x 3cm / 6.50 x 1.38 x 1.18in Packing List: 1 x Voltage Tester 1 x Manual (English)