Thermocouples are temperature sensors widely used in industrial automation, manufacturing, and process control. They consist of two dissimilar metal wires joined at one end, generating a voltage proportional to temperature differences. Key features include durability, wide temperature range (-200°C to +2300°C), fast response, and suitability for harsh environments. Common types include J, K, T, E, N, R, S, and B, each with specific temperature ranges and applications. Typical products in this category include thermocouple probes, connectors, extension wires, transmitters, and calibration equipment. These components are essential for temperature monitoring in furnaces, engines, reactors, and HVAC systems.