Temperature humidity data logger with USB, widely used in cold -chain transportation field HVAC refrigerator field Multi-function record ... , records, calibration, accumulate, alarm functions etc. It can be used to measure the voltage, low current (0-24mA), high current (0 ~ 600A), ... 24)mA,(0~600)A output signal to choose;8. Auto power offSpecifications:Temperature (built-in NTC):-30~+60°C ±1°CHumidity ...