The MASTECH M266C digital clamp meter integrates multiple practical measurement functions in one unit, capable of measuring AC/DC voltage, AC current, insulation resistance, and temperature to meet everyday maintenance and professional testing needs. Its 50mm large jaw opening makes it easy to clamp onto various conductors, and AC current measurement is supported up to 1000A. With simple operation and comprehensive functions, it helps electricians, maintenance technicians, and electronics enthusiasts complete measurement tasks more efficiently.