1. Auto power off when the conductor to be measured exceeds 12V. 2. Phase rotation test. Continuity test with buzzer and LED indication. 3. Low battery indication and overvoltage warning. 4. Built-in flashlight. Test live voltage without batteries. 5. Buzzer and silent modes available. Auto range. Polarity indication. Product Model: UT18D Voltage and Continuity Tester Product Introduction: Waterproof voltage and continuity testing series products. Ideal for use in dark, humid, or rainy working environments where high testing safety is required. Sudden transient overvoltage can pose risks to users. With IP65 waterproof rating, built-in lighting, RCD testing, and phase rotation testing, this device meets maintenance and troubleshooting needs in harsh conditions. The UT18 series is designed for AC/DC voltage testing, 3-phase voltage detection, phase sequence identification, continuity checks, and more. Rated CAT IV 600V and compliant with IP65 standards, these testers are reliable tools for electricians performing voltage measurements in various environments. This series is not intended for use with 110V electrical systems. Type: Voltage and Continuity Tester Specification: UT18D Color: As shown Material: ABS Package Contents: 1 x Voltage and Continuity Tester Note: The package includes only the items listed above. Other accessories are not included. Light reflection and display differences may cause slight variations between the product color in images and the actual item. Measurement error allowance is +/- 1-3 cm.