The PTM500 automotive exhaust gas analyzer is a high-precision emissions testing instrument designed specifically for automotive exhaust gas analysis and environmental monitoring. It simultaneously measures the concentrations of HC, CO, CO₂, O₂, and NO in automotive exhaust gases, providing reliable data for vehicle inspection, emissions control, and engine performance diagnostics.

The MS600S portable six-in-one gas detector is primarily used for the rapid and accurate detection of gas leaks or for alarming when gas concentrations exceed safe levels. It features a front-end digital sensor that can be replaced without disassembling the device. Each digital sensor is plug-and-play and intelligently recognized, allowing for the simultaneous configuration of multiple single digital sensors for the detection of a wider range of gases. The main gas detection principles employed include: electrochemical, infrared, catalytic combustion, thermal conductivity, and PID photoionization.