... further analysis; can set up emergency alarm, calibration, and to read, print and save alarm records, etc.1500 mAh large-capacity ... equipment battery life; Using USB rechargeable, universal charger is convenient for your charge. This gas detection alarming detector shell ... )Temperature range: - 20 ℃ ~ 50 ℃Humidity: 15% ~ 95% RH (No condensation)Power supply: the lithium battery power supply (1500 mAh ...