Data Logging Ambient Hygrometer, (1) Cabled Ambient/Humidity Sensor, Multi-Point Calibration, 32 Degrees to 131 Degrees F/0 Degrees to 55 Degrees C, Application Controlled Storage Laboratories, Environmental Chambers, Storerooms, Warehouses, Alarm Type Max/Min, Resolution 0.1 Degrees F/0.1 Degrees C/0.1 Percent RH, Probe Type (1) Cabled Ambient/Humidity Sensor, (4) AAA Batteries, Temperature Accuracy +/-0.4 Degrees C