This minature data recorder measures humidity and temperature to an accuracy of ±0.5°C and 3%RH. It's small size and stainless steel enclosure allow it to fit in medicine containers, liquid bottles and other small areas. Features LED alarm for visual indication that user-defined temperature limits have been exceeded. Temperature Sensor: Internal semiconductor Temperature Range: 0 to +50°C Temperature Resolution: 0.1°C Calibrated Accuracy: ±0.5°C Humidity Sensor: Internal semiconductor Humidity Range: 0~95%RH Humidity Resolution: 0.1% RH Calibrated Accuracy: ±3.0%RH Memory: 16,383/channel Sample Rate: 2 seconds up to 12 hours RH Units: %RH, dew pt., water vapor, concentration (mg/hl) LED Indicator: Red & Green Required Interface Package: IFC102 Baud Rate: 38,400 Typical Battery Life: 1 year Operating Environment: 0~+50°C, 0~95%RH non-condensing Material: 303 stainless steel Dimensions: 1.5" x 0.6" dia. (39mm x 16mm) CE Approval: Yes Weight: 1oz.