-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. -02 sensitive element adopts SHT3X, a newly designed CMOSens chip, an improved capacitive humidity sensor element and a standard bandgap temperature sensor element, whose performance has been greatly improved and even exceeds the reliability level of the previous generation of sensors (SHT1x and SHT7x). It provides more stable performance in high humidity environments. -02 adopts dip switch address setting, eliminating the need to set the address via host computer, making it simple, convenient, and easy to maintain and replace. -02 features excellent long-term stability, low hysteresis, low power consumption, strong resistance to chemical pollution, and excellent repeatability. It is an ideal solution for accurately measuring temperature and relative humidity in HVAC, communication rooms, warehouses, buildings, and automatic control applications. Humidity probe monitor measuring range: -40C to 125C, high precision, DC 5-24V, suitable for HVAC, farms, and industrial applications. Color: grey Material: ABS Package Contents: 1 x Temperature and humidity sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. Measurement allowed error is +/- 1-3 cm.