... light, bed No., AIR, OCCL. OVER, EMPTY.Alarm functionsOVER, OCCL., Air, Empty, Low battery, control abnormal, no AC power supply ... Class-BFOperating conditionsEnvironment temperature: 5°C ~ 40°C, air pressure: 86kPa ~106kPa, relative humidity: ≤80% Storage ... conditionsEnvironment temperature: -40°C~55°C, air pressure: 50kPa ~106kPa, relative humidity: ≤95%Applied standardsIEC ...