1Wall type exquisite appearance design, installation screws on both sides, simple installation, saving space. 2Made of high density PP material shell, safe, anticorrosion, durable. 3The waterproof strip is enclosed inside and the moisture proof effect is remarkable. 4The design of air vent makes the gas flow more unobstructed, improved accuracy and response time. 5It is applicable to different scenarios such as agricultural monitoring, industrial monitoring, environmental monitoring, hydrological measurement and fire monitoring. 6Adopts the professional test H2S concentration sensor probe, which can effectively detect hydrogen sulfide gas. 7It has the characteristics of wide measurement range, high accuracy, good linearity, good universality, easy to use, easy to install and long transmission distance. Condition: 100% Brand New Item Type: H2S Transmitter Material: PP Color: As shown in the picture Size: Approx.110x85x44mm / 4.3x3.3x1.7in Weight: Approx.226g/8oz Measuring Range: 0-100ppm / 0-1000ppm Measuring Method: Electrochemical sensor Measurement Accuracy: 3% of reading (25 C) Response Time: Less than 15 seconds Baud Rate: 2400/4800/9600 Power Supply: 12-24V DC Power Consumption: 0.15W (@12V DC, 25C) Operating Temperature: -30 C ~ 50 C Operating Humidity Environment: 0-100% RH (15-95% RH) Working Pressure Range: 0.9-1.1atm Wiring Instructions: Wide voltage power input can be 12-24V. When wiring the 485 signal line, note that the A/B lines cannot be connected in reverse. The addresses between multiple devices on the bus cannot conflict. Brown Wire: power supply (12-24V DC) Black Wire: negative power supply Yellow Wire: 485-A Blue Wire: 485-B Instructions: 1. Connect the sensor and USB to 485 converter in line order 2. Connect the trapezoidal port of the computer and converter with a USB cable. 3. Turn on the power. Read the readings in the software Application Range: Industrial Site: petroleum and petrochemical, chemical plants, smelters, steel plants, coal plants, thermal power plants, pharmaceutical research, pharmaceutical production workshops Environmental Monitoring: sewage treatment, industrial gas process control, boiler room waste treatment plant, tunnel construction, oil pipeline, gas station, underground gas pipeline maintenance, indoor air quality inspection, environmental monitoring Scientific Research Security: school research, building construction, fire alarm, hazardous area safety protection, aerospace, military equipment monitoring, tobacco companies, etc. border: .5pt solid000;};border: 1px solid000important;}1 x H2S Transmitter1. Please allow 1-2cm 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.