1Adopt high-sensitivity gas detection probe, with stable signal, high accuracy and reliable use. 2The product adopts wall-mounted installation, easy installation, high protection level, and good waterproof. 3It has the characteristics of wide measuring range, good linearity, easy installation and long transmission distance. 4The shell is made of high-quality PVC material, which is not easy to damage, durable, and has a long service life. 5The transmitter can be widely used in food industry, livestock and poultry farming, agricultural greenhouses, aquaculture, pharmaceuticals, medicine care and other industries.Condition: 100% Brand New Item Type: Ozone Transmitter Material: PVC Power Supply: 10-30V DC Average Power Consumption: 0.1W Output Signal: 485 (ModBus-RTU) Temperature Measurement Range: -40 -80Temperature Accuracy: 0.5Humidity Measurement Range: 0-100% RH Humidity Accuracy: 3% RH Ozone Measurement Range: 0-10.00ppm, 0-100ppm Working Temperature: -10 -55Working 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 Zeroing 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 atmospheric pressure, and the gas concentration to be measured does not exceed the sensor range. Weight: Approx. 190g / 6.7oz Panel Size: Approx. 8.8x8.8cm / 3.5x3.5in Interface Description: The wide voltage power input can be 10 ~ 30V. When connecting the 485 signal line, please note that the two lines A B cannot be reversed, and the addresses of multiple devices on the bus must not conflict. Thread Color Explanation Power Supply Brown Power Positive (10 - 30V DC) Black Power Negative Communication Yellow 485-A Blue 485-BCommon Problems and Solutions Device cannot connect to PLC or computer Possible reason: 1. The computer has multiple COM ports, and the selected port is incorrect. 2. The device address is wrong, or there are devices with duplicate addresses (the factory default is all 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 there are too many devices or the wiring is too long, power should be supplied nearby, add a 485 enhancer, and add 120 terminal resistance. 7. The USB to 485 driver is not installed or damaged. 8. The equipment is damaged. 1 x Transmitter1 x Bag of Accessories (2 x Screws, 2 x Screw Nuts)1. Please allow 0-2 cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.