The TM100Y wired temperature measuring device can monitor the cable temperature, components or ambient temperature through an external temperature sensor. When the monitoring value is higher than the alarm setting value, the device immediately generates an alarm signal and uploads it to the higher-level system through the RS485 bus. TM100Y adopts Chinese large-screen man-machine interface, which is very convenient to operate and query parameters. During operation, the internal core components can be self-checked in real time to ensure reliable operation. The TM100Y wired temperature measuring device can measure the temperature of 12 channels at the same time. It is suitable for measuring the temperature of heat-prone parts such as low-voltage distribution cabinets, distribution boxes, box-type substations, busbars, low-voltage capacitors, etc., to ensure the stable operation of power equipment.