TS-200 stick-type temperature sensor has high cost performance and simple product installation. After installing this temperature sensor on the machine, it is connected to the temperature sensing converter TT-300 and connected by RS-485 communication. Line AG-300 (Smart IoT-Gateway), which can be directly connected to smart phones after being connected to the Internet, provides strongly always connect, push notification, interactive and other mobile maintenance (Mobile Maintenance, MM) functions.