Measuring range: 0-2,000ppm Sample gas: Hydrogen Measuring principle: electrochemical Operating temperature: -40°C - 60°C Humidity: 20-90%rel, non-condensing Supply voltage: 12 - 24VDC Current consumption: 90 - 130mA Relay output: optional Output signal: RS485 or 4-20mA Dimensions: 155x130x90mm; Weight: max. 1.7kg Protection class: IP65 ATEX II2G Eex d Screw connections: ¾"NPT