GX18B20 with Temperature Sensors TO-92 RoHS is a 3-pin electronic component manufactured by GXCAS. It is an integrated circuit (IC) used for the measurement of temperature. It is made up of a resistor, a transistor, and a diode. The resistor can detect the temperature and it then sends signals to the transistor, which amplifies the signal and sends it to the diode. The diode then processes the signal and delivers the temperature value to the analog output terminal of the device. This device is RoHS (Restriction of Hazardous Substances) compliant, making it safe for use. It is also capable of measuring temperatures up to +85°C. It is widely used in environmental sensing, automotive, HVAC, or other applications that require temperature sensing.