CareFusion Smoke Check Meter, Operating Manual

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Pressure coefficient 0.02% signal per mBar
Relative humidity 15 - 90% continuous
(Non condensing) (0 - 99% intermittent)
Baseline drift 0ppm (auto-zero)
Long term drift < 2% signal loss per month
Power source Single Alkaline 9 volt PP3
Battery life > 8000 tests
Weight 130g without battery
Dimensions 170 x 60 x 26 mm
Display Custom LCD
Storage temperature -20 ° to +70 °C
Storage humidity 30% to 90%