The PR235 series multi-function calibrator can measure and output a variety of electrical and temperature values, with a built-in isolated LOOP power supply. It adopts an intelligent operating system and combines touch screen and mechanical key operations, featuring rich functions and easy operation. In terms of hardware, it uses a new port protection technology to achieve 300V over-voltage protection for measurement and output ports, bringing more excellent safety and convenient operability for on-site calibration work.