... pressure, constant flow, over-voltage, over-current protection work function; Indicator light conversion; Automatic recovery etc. FunctionCharge voltage: 16.8 V ... : input/output: 10 M between OhmsWorking temperature, humidity: '10 °C ~ + 50 °C, and 20% ~ 90% RHStorage temperature, temperature: '10 °C ~ + 60 °C, and 20 ...