Features 1、The shell is made of high-quality material, which is not easy to damage, durable and has a long service life. 2、The product uses a wall-mounted waterproof shell, which is easy to install and has a high protection level. 3、Adopt high-sensitivity gas detection probe, with stable signal, high accuracy and reliable to use. 4、It has the characteristics of wide measuring range, good linearity, easy installation and long transmission distance. 5、Widely used in the food industry, livestock and poultry farming, agricultural greenhouses, aquaculture, pharmaceuticals, etc. Specifications Condition: 100% Brand New Item Type: Transmitter Material: PVC Panel Size: Approx. 8.8 x 8.8 cm / 3.5 x 3.5 in Weight: Approx. 192g / 6.8oz Parameter: Power Supply: 10~30V DC Average Power Consumption: 0.1W Output Signal: 485 Temperature Measurement Range: -40℃~80℃ Temperature Accuracy: ±0.5℃ Humidity Measurement Range: 0~100%RH Humidity Accuracy: ±3%RH Ozone Measurement Range: 0~10.00ppm, 0~100ppm Working Temperature: -10℃~55℃ Working Humidity: 15%RH-90%RH (No Condensation) Working Pressure 91~111Kpa Data Update Time: 1s Repeatability: ≤2% Output Value Stability (Month): ≤7% Signal Value / Year Response Time: ≤35S Warm-Up Time: ≥ 5 Minutes Resolution: Range: 0~10ppm: 0.01ppm, Range: 0~100ppm: 0.1ppm Accuracy: ±6%FS Zero Drift: Range: 0~10ppm: ≤±1ppm, Range: 0~100ppm: ≤±5ppm Note: All the above Specifications are measured under the environment conditions: temperature 20℃, relative humidity 50%RH, 1 barometric pressure, and the gas concentration to be measured does not exceed the sensor range. Interface Description: Thread Color Description Power Supply Brown Power Supply Positive (10~30V DC) Black Power Supply Negative Communication Yellow 485-A Blue 485-B Common Problems and Solutions: Equipment cannot be connected to PLC or computer Possible Reason: 1) The computer has multiple COM port, and the selected port is incorrect. 2) The equipment address is wrong, or there are equipment with duplicate addresses (the factory default is 1). 3) Baud rate, check mode, data bit, stop bit error. 4) The host's polling interval and waiting time for answering are too short, and both need to be set above 200ms. 5) The 485 bus is disconnected, or the A and B lines are reversed. 6) If the number of equipment is too large or the wiring is too long, power should be supplied nearby. Add a 485 intensifier and increase 120Ω terminal resistance. 7) The USB to 485 driver is not installed or damaged. 8) The equipment is damaged. Package List 1 x Transmitter 1 Bag x Accessories (2 x Screw, 2 x Nut)