Description: Plastic structure design ensures rust and corrosion resistance for excellent durability. Our tester can be used to measure the opening phase condition and sequence through LED and Buzzer. It is constructed of abs material. The length of this product is 8.5cm, the width is 6.4cm and the height is 2.3cm. It is suitable for industrial. Item Name: Phase Meter Material: ABS Measurable Frequency Range: 20Hz-400Hz Features: High Strength, Good Toughness, Wear Resistant Phase Sequence Indicator LED: Inverted Red, Continuous Beep Green Indicates Correct Phase Sequence, Intermittent Beeps Working Voltage: 60-600V (Three-phase Alternating Current) Maximum Withstand Voltage: 2000V/min (Pulse Voltage 4000V) Continuous Use Time: 200V ACV, No More Than 60 Minutes, 600V ACV, No More Than 4 Minutes Size Details: Size: 8.5cm x 6.4cm x 2.3cm/3.35" x 2.52" x 0.91" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x SM852B Phase Meter 3 x Clips 1 x Storage Bag 1 x User Manual