This series of power meters has outstanding practical and safety features: adopting precision resistance sampling technology and high-speed processors, the measurement accuracy reaches ±(0.4% reading + 0.1% range), unaffected by waveforms; it supports upper and lower limit setting of parameters such as current and power with sound and light alarms, adapting to batch testing and significantly improving production line efficiency. The standard RS-232 interface facilitates system integration, with automatic range switching and key lock functions for safe and convenient operation. With a lightweight body (net weight 2.5kg) and switchable 110V/220V voltage, it balances flexibility and professionalism, making it an ideal choice for high-precision electrical parameter detection.