The ANENG ST181 Digital Clamp Meter is a versatile and reliable tool designed for measuring electrical parameters in a wide range of applications. It features a compact and ergonomic design that is easy to use with one hand. The ST181 is capable of measuring AC/DC voltage, AC current, resistance, frequency, and diode continuity. It also has a non-contact voltage detector and a data hold function that allows users to freeze and record readings. The device is designed with a clamp jaw that can measure current up to 400A, making it ideal for use in HVAC, electrical, and automotive applications. Additionally, the ST181 is built with safety features such as overload protection and auto power-off function to prevent damage to the device or injury to the user. The ANENG ST181 Digital Clamp Meter is powered by two AAA batteries and has a low battery indicator. It is compact, lightweight, and easy to carry, making it an excellent choice for both professionals and DIY enthusiasts. Overall, the ANENG ST181 Digital Clamp Meter is a reliable and versatile tool for anyone who needs to measure electrical parameters. It is an ideal tool for electricians, HVAC technicians, and anyone working with electrical systems. - Display: LCD with max reading of 1999, - Measurement Range:, - AC/DC Voltage: 0.1mV – 600V, - AC Current: 0.1A – 400A, - Resistance: 0.1Ω – 20MΩ, - Frequency: 10Hz – 1MHz, - Diode Test, - Continuity Test, - Non-Contact Voltage Detection (NCV), - Jaw Opening: 28mm, - Data Hold Function, - Overload Protection, - Auto Power-Off Function, - Power Supply: 2 x AAA Batteries (Not included), - Dimensions: 170 x 56 x 30mm, - Weight: Approx. 110g.