Feature: 1. Better Sensor: Able to detect temperature and humidity with high accuracy, the transmitter allows for flexible application. 2. Clear Display: LCD screen enables clear digital display as well as more convenient operation to save your time and labour. 3. Reliable Work: Combining dedicated analogue circuit and 10‑30V wide voltage input, the temp meter has excellent durability. 4. Simple to Use: You can easily set the parameters through the buttons, and the good dust protection ensures high work safety. 5. Easy to Install: The light weight together with compact size largely simplifies both wall mount and slide rail installation. Specification: Item Type: Temperature Sensor Product Size: Approx. 147 x 88 x 41mm / 5.79 x 3.46 x 1.61in Power Supply Wiring: Wide voltage 10~30V DC power input. Product Overview: The transmitter is an industrial wall mounted enclosure with a high degree of protection. The circuit adopts industrial grade microprocessor chip and high accuracy temperature and humidity sensor to ensure excellent reliability, high accuracy and interchangeability of the product. Adopts standard industrial interface 4~20mA analogue signal output, can be connected to on site digital display, PLC, inverter, industrial control host and other equipment, safe and reliable, beautiful appearance, easy installation. Parameter: Model RS-WS-120-2D-LCD DC Power Supply (Default) DC 10~30V Maximum Power Consumption Current Output 1.2W Voltage Output 1.2W A Accuracy Humidity ±2%RH（60%RH，25℃） Temperature ±0.4℃（25℃） B Accuracy Humidity ±3%RH(60%RH,25℃) Temperature ±0.5℃（25℃） Temperature Range -40℃~+120℃, Default -40℃~+80℃ Humidity Range 0%RH-100%RH Transmitter Circuit Working Temperature and Humidity -20℃~+60℃, 0%RH~95%RH (NonCondensing) Probe Operating Temperature -40℃~+120℃, Default -40℃~+80℃ Probe Working Humidity 0%RH-100%RH Long Term Stability Humidity ≤1%RH/y Temperature ≤0.1℃/y Response Time Humidity ≤8s(1m/s Wind Speed) Temperature ≤25s(1m/s Wind Speed) Output Signal Current Output 4~20mA Load Capacity Voltage Output Output Resistance ≤250Ω Current Output ≤600Ω Hole Size (Approx.) 70mm / 2.76in Parameter Settings Modify directly through software settings or buttons. Specific Wiring: Circuit Identification Description Power Supply VCC Power Positive GND Power Negative or Signal Negative Output TH Positive Temperature Signal RH Positive Humidity Signal Note: The device does not provide communication line by default, the line colour is for reference only. Common Problems and Solutions: When there is no output or output error, the possible reasons are: 1. The corresponding error of the range leads to an error in the PLC calculation. For the range, please refer to the technical specifications in the first part. 2. The wiring method is incorrect or the wiring sequence is wrong. 3. The power supply voltage is incorrect. 4. The distance between the transmitter and the collector is too long, causing signal disorder. 5. The PLC acquisition port is damaged. 6. The equipment is damaged. Weight: 178 g / 6.28 oz(approx.) . Package List: 2 x Screw2 x Wall Plug1 x Temperature Sensor1 x User Manual