Feature : State Of The Art Micro Controller Based Technology,Wide Operating Voltage 18V To 30V DC,CMRI & CCOE Approved Enclosures Available,Linear 4-20 MA Output And Accurate Reading Local LCD Display,Available In Various Sensors For Toxic, Oxygen Gases,2 Wire Loop
Shelf life : 6-month shelf life prior to activation
Shown on box label
Ingress Protection : IP66 and IP67
Weight : 76g (2.7oz)
Event log : Lasts 25 events
Communication accessory
* 4 alarm minutes per day : USB IR link for event download and configuration
Size : 85 x 50 x 28mm (3.3 x 2.0 x 1.1ins)
Operating temperature : H2S: -40°C to + 50°C (-40°F to +122°F)CO:  -40°C to + 50°C (-40°F to +122°F)O2:   -35°C to + 50°C (-31°F to +122°F)Â
Tests : Full function self test of activation and every 20hrs: continuous automatic battery integrity tests
Sensor range : H2S:Â 0-100ppm
CO:Â 0-300ppmO2:Â Â 0-30% vol