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03 Series Single Gas Monitors

Designed for LEL, O2, H2S, or CO detection

The 03 Series single gas monitors are designed for LEL, O2, H2S, or CO detection. Individuals need personal protection in hazardous areas at all times without adding extra bulky equipment, and the 03 Series can provide that kind of protection at an affordable price. The GP-03, OX-03, CO-03, and HS-03 models are personal single gas monitors designed for protection from exposure to combustible hydrocarbons, oxygen deficiency, hydrogen sulfide, or carbon monoxide.


  • Available for LEL, O2, H2S, or CO
  • Operates 3,000 hours on alkaline
    (GP-03 up to 35 hours)
  • Pocket size 2.1” x 2.6” x 0.9”
  • Lightweight, 2.8 ounces
  • IP-67
  • Data log from 5 to 300 hours
  • Audible / visual / vibration alarms
  • Automatic backlight
  • Peak Hold, STEL & TWA
  • Intrinsically safe, ATEX & CSA
  • 3 Year warranty H2S & CO
  • 2 Year warranty LEL & O2


  • Hazardous Material
  • Mining
  • Tunnels
  • Refineries / Petrochemical
  • Water / Wastewater Treatment
  • Pharmaceuticals
  • Utilities
  • Chemical Plants
  • Fire Services


Ordering Information 

CO-03 Carbon Monoxide (0-500ppm)

HS-03 Hydrogen Sulfide (0-100ppm)

OX-03 Oxygen (0-40%vol) 

GP-03 Combustible Gas (0-100% LEL)