Check the listing for details. Lascar EL-21CFR-2-LCD Lascar 21CFR USB Humidity & Temperature Data Logger LCD. Condition: New. Listed at 144.99 USD. Lascar 21CFR USB Humidity and Temperature Data Logger w/ LCD DisplayEasyLog 21CFR Compatible for Storing Data in Compliance with 21CFR Part 11 RegulationsPart Number: EL-21CFR-2-LCDDesigned to Meet 21CFR Part 11 Compliance with Digital Signatures and EncryptionMeasure and Record Temperature, Humidity and Dew Point Readings Using Internal Sensor-35°C to 80°C and 0 to 100% RH Measurement RangeStores 16,382 Temperature and 16,382 Humidity Readings onto Non-Volatile Internal MemoryPowered by User-Replaceable 1/2 AA Lithium Battery with up to 2 Year Battery LifeHigh Contrast LCD Displays Temperature and Humidity, 2 1/2 DigitsIncludes Protective Cap and 1/2 AA Lithium Battery and 21CFR Part 11 Software Available for Download.Note: At temperatures Below -20°C (-4°F) the LCD will Exhibit Slower Response Times of Approximately 10 Seconds.