TRMS current clamp: This clamp meter can accurately measure AC current, AC/DC voltage, frequency or duty cycle, resistance, capacitance, diode, continuity test and temperature. Root Mean Square (RMS) can accurately measure nonlinear loads. Easy to use in labs, homes and factories. Low input impedance helps prevent false readings caused by phantom voltage. The low pass filter (LPF) is used to accurately measure the frequency converter signal when measuring motors and transformers. To measure current, the instrument must be fixed on a wire, not on the whole power cord. NCV fault detection function: Non-contact voltage detection can effectively check electrical status by measuring EM field strength without touching any wires; the NCV button is located on the right. Simply put your thumb on it and press it. Multi-function: two-color backlit LCD display - when power> 80V, current> 3A, backlit LCD display turns red to remind you of high voltage / LED flashlight / liquid and adjustment ports (including Type-K thermocouple / low battery Indicates / automatically shuts off after 15 minutes of inactivity. Security: Safety standard IEC 61010-1, CAT III 600V. Double insulation. 7/24 customer service. Number of products: 1 piece Color: black red Size: 194*73*34mm Clamp opening size: 26 x 44mm