"PPS Make Hydro-Carbon/ Flammable/Combustible Gas Detector. Model: gaZsens Exi, Sensor type: Catalytic Bead Pellistor Type. Range: 0-100% LEL, Sensor housing: Exd IIC T4. Weather protection: IP 55 Enclosure: SS316. Transmitter: 3 wire 4-20 mA (non-Isolated) signal output. Transmitter enclosure: Aluminium Die-cast Exd type - Exd IIA/IIB or IIC T6 IP 65/66 Calibrated for Methane or Hydrocarbon Gas or Hydrogen, Features: Contacts with RED LED on PCB for Alarms & fault Display: Alphanumeric LCD Digital Type Display, Signal Output: RS 485, 3 Nos. Potenital Free Relay Contacts for AL1, AL2 & FLT Parameter Controls: Non-intrusive calibra tion via Magnetic STick, Sensor Life: App.3- 4 years in fresh air. Operating temp:-10 to +55 Deg C Acces sories : Cable Glands 3/4""ET Exd. Approval: Sensor Ho using & Transmitter Enclosure:CIMFR tested, BIS Approved & PESO Certified "