Special Features
Shall be a single unit with rs-232 serial or usb port for interface to pc, shall display temperature from 5 to 110 degree far +/- 2 degree far, shall display relative humidity from 5 to 95 percent +/- 3 percent, shall record temperature and relative humidity for 24 hrs 7 and 31 day based on user request and one sample per minute, shall be powere 120v 60hz with battery backup, shall be no more than 10 inches by 10 inches by 4 inchs and weigh no more than 5 lbs, shall be free satnding or wall mountable, shall be able to operate without calibration for at least 12 months at the stated accuracy, shall include one copy of commercial operation and maintenance manual including calibration procedures and adjustments
