Fixed Combustible Gas Detector RS485 4‑20mA Signal Output LCD Display Gas Leakage Detector for Workshop Ship 100‑240V US Plug Item Type: Combustible Gas Detector Material: Die Casting Aluminum Detection Range: 0 to 100 percent LEL Display Method: LED display Detection Accuracy: ± 3% F.S LED Display Content: Measured gas name, real time numerical value, 50 segment bar chart display in real time Gas concentration, gas full scale, gas internal parameters LED Display Mode: ppm, ppb, mg/m3, ug/m3,% VOL,% LEL Working Environment Temperature: -20 to 50 ℃ Working Environment Humidity: 10 to 95% RH non condensing Signal Output: 4-20mA Signal: Standard 12 bit accuracy 4-20mA output chip, transmission distance 1Km RS485 Signal: Using standard RTU protocol, transmission distance 1Km Battery: CR2025 button battery x 1 (remote control shipped without battery)