Able to record and store over 16,000 temperature readings from -35 to +80ºC and over 16,000 relative humidity readings from 0 to 100% at user-selected sample rates, the EL-USB-2-LCD standalone USB datalogger from Lascar Electronics has a 2½-digit LCD to indicate minimum, maximum, and last stored temp/RH readings. The device accepts a 3.6-V ½-AA lithium cell and includes configuration software. From $97 including software and battery.
814-835-0621, www.lascarelectronics.com 
For more information, visit the EL-USB-2-LCD product page .