-02 temperature and humidity transmitter is designed based on RS-485 communication interface, compatible with standard Modbus-RTU protocol, and can be connected to Modbus network to measure and monitor temperature and humidity. The -02 sensitive element adopts SHT3X, a newly designed CMOSens chip, featuring an improved capacitive humidity sensor and a standard bandgap temperature sensor, offering significantly enhanced performance and reliability compared to previous generations (SHT1x and SHT7x), ensuring stable operation in high humidity environments. The -02 uses a DIP switch for address setting, eliminating the need for host computer configuration, making installation, maintenance, and replacement simple and convenient. The -02 offers excellent long-term stability, low hysteresis, low power consumption, strong resistance to chemical pollutants, and high repeatability. It is an ideal solution for accurate temperature and relative humidity measurement in HVAC, communication rooms, warehouses, buildings, and automatic control applications. Humidity probe monitor measuring range: -40°C to 125°C, high precision, DC 5-24V, suitable for HVAC, farms, and industrial environments. Color: grey Material: ABS Package Contents: 1 x Temperature and humidity sensor Note: Other items not included. Note: Light reflection and display differences may cause slight color variation between the image and the actual item. Measurement error allowance: +/- 1-3 cm.