?Reliable Clamp Multimeter with True RMS?Accurate AC/DC voltage current, resistance, capacitance, frequency, temperature, diode, continuity test and non-contact AC voltage detection, the Clamp Meter is fully functional and easy to use for labs factories radio-technology and household. Q1: Why does my clamp meter read zero when I clamp it around a power cord? A: This is normal and a common misunderstanding. A clamp meter must be clamped around only one conductor (either the hot wire OR the neutral wire, not both). When you clamp around a whole power cord, the magnetic fields from the hot and neutral wires cancel each other out, resulting in a zero reading. To get an accurate AC current reading, separate the wires and clamp around a single conductor. Q2: Can this measure DC current for my car or solar panel project? A: No, this model measures AC current only. It does not measure DC current. However, it does measure AC and DC voltage (up to 600V), resistance, continuity, diodes, and temperature. For DC current measurements, you would need a different clamp meter model that specifically supports DC current. Q3: How do I use the NCV (non-contact voltage) function to find a live wire? A: Simply press the NCV button, then bring the clamp head near the wire or outlet you want to test. The meter will emit an audible beep and show a visual indicator (green light for weak signal, red light for strong signal). The beep frequency increases as you get closer to live voltage. This is perfect for identifying which wire is hot inside a junction box without touching bare conductors. Q4: Whats the difference between the clamp head light and the regular flashlight? A: The clamp head light is a small LED built into the jaw that illuminates the conductor you're clamping - very useful when working in dark breaker panels or tight spaces. The separate flashlight is on the body of the meter and illuminates your general work area. Both can be used independently depending on your needs. Q5: How do I measure temperature with this clamp meter? A: Plug the included K-type thermocouple into the COM and ?/? jacks, then press the function button to select temperature mode. Place the probe tip on the surface you want to measure. The meter measures from -40C to 1000C (-40F to 1832F). This is great for checking HVAC vent temperatures, engine exhaust, overheating motors, or cooking oil. Q6: Can I use this on my homes 220V AC dryer outlet? A: Yes, the meter is rated for AC voltage up to 600V, so it is perfectly safe for 220V dryer outlets, 120V household outlets, and most residential and light industrial applications. Always follow standard electrical safety practices: ensure the meter leads are properly seated, do not touch metal probe tips during measurement, and use the correct function setting. Q7: Does it auto shut off to save battery? A: Yes, the meter automatically powers off after approximately 15 minutes of inactivity to conserve battery life. A low battery indicator alerts you when the 2 AAA batteries need replacement. The included batteries get you started right out of the box.