The most powerful handheld Biogas Analyzer on the market. MRU's Optimax can perform simultaneous measurements of up to 7 gas components! Biogas measurement: O2, H2S, CH4 and CO2 (infrared for CO2/CH4) Emissions measurement: O2, CO*, NO*, NO2* and CO2. The Optimax can also perform biogas pressure measurement (or stack pressure). It has a standard O2 measurement with long-life cell (approx. 4-5 years estimated life span). It's fitted with a modern, slim line enclosure with secure rear-mounted magnets for drop-resistant operation. All the data is displayed on a super bright, color 4.0” TFT screen with LED backlit.