Reusable Temperature Humidity Data Logger: Advanced internal sensor provides a measuring range temperature of -22°F ~ +158°F (-30°C ~ +70°C), optimized for freezer monitoring down to -22°F, humidity: 5%~95%RH; accuracy range: ±0.5℃ (-20℃~ +40℃),±3%(20%~80%RH); ±1℃ for other range and large data memory (28800 readings). Please note: M2 temp loggers can also be started and used without resetting parameters.
