Instant display of CFM, FPM, CMS, MPS and temp. Min/max. Data hold. Single point average. Multi-point average. RS-232 output. F/ C switch. Air flow range: 80 to 6900 FPM (0.4 to 35 m/s). Temperature range: 14 to 122 F (-10 to 50 C). Accuracy: plus/minus 2 percent full scale, plus/minus 1 F (plus/minus 0.6 C). Resolution: 1 ft/min (0.01 m/sec), 0.1 degree. Cord length: 20.5 in. extends to 4.5 feet. Dimensions: 7.125 x 2.75 x 1.375 in. Power source 9 volt battery. Replacement Probe - 8901P. Includes hard Case and battery.