1. Certified by CE, Ex ia, EMC, SIL2 and HART 2. Dual channel, supporting multiple thermistor and thermocouple sensors, and supporting redundant hot backup of sensors 3. Supports 2/3/4-wire when connecting thermal resistors 4. The cold end compensation accuracy of the thermocouple can reach ± 0.15 ℃ (externally connected Pt100) 5. High precision (Pt100: ± 0.1 ℃), low-temperature drift (Pt100: ± 0.003 ℃/℃)