The GASMAX II single / dual channel Toxic / O2 / LEL gas monitor delivers the latest gas detection technology, reliability and ease of use. Available in both single and dual channel models, the GASMAX II is CSA certified for use in Div 1 & Div 2 explosion proof installations.

The highly visible backlit display shows calibrated engineering values, bargraph data, 30-minute trend and setup information. Front panels LEDs continuously indicate alarms.

In addition to dual 4-20mA current loop outputs, an RS-485 two-wire MODBUS® interface and three optional 5A relays are available to communicate with controllers or local alarm indicators.

Brochure Manual


  • Monitor Toxic / O2 and LEL / VOC from single point
  • Graphic display shows values, units, trend graph
  • Non-intrusive one-person prompted calibration
  • Programmable power-up and post-calibration delay eliminates false alarms
  • Backlit display for better visibility in low light conditions
  • Options for 3x 5A alarm contacts, isolated 4-20mA and MODBUS® interface
  • Security settings to lock critical parameters
  • Smart Sensors store calibration & alarm events
  • CSA Certified for explosion proof installations