... settings, using AC power directly, Ni-MH rechargeable batteries , ordinary alkaline batteries (only T51PCN), to meet your requirements under different ... 2 secondsWorking temperature range-10°C to 40°CinterfaceStandard RS232 interface and provide other optionsShape size(L X W X ... power supply, Optional NiMH rechargeable battery, Ordinary six C-size alkaline batteriesMaterialHigh-strength ABS plastic