Testo 0560 4251 ABS CFM Hot-Wire Anemometer, 9V Battery

The compact anemometer, testo 425, with permanently attached thermal flow probe and telescopic handle. Volume flow is shown directly in the display. Exact volume flow calculation thanks to easy input of duct area. You can also switch to the current temperature reading. Timed and multi-point mean calculation provide information on mean volume flow, flow speed and temperature reading. Min/Max and Hold function included. Flow, volume flow (cfm) and temperature measurements. Multi-point and timed mean calculations. Max-Min values make comparisons fast and easy."Hold" button freezes readings. Clear backlit display. Auto Off. TopSafe provides water, dirt and impact protection. -40 to 185 degree F storage temperature. -4 to 122 degree F operating temperature. 9V battery. 20 hours of battery life. Weight 10 oz. Measures 7" length by 2.5" width by 1.6" height. ABS housing material. Probe type NTC. -4 to 160 degree F measuring range. Accuracy: +/- 0.9 degree F (32 to 140 degree F), +/- 1.3 degree F (remaining range). Resolution: 0.1 degree F. Probe type Thermo. 0 to 4000 fpm measuring range. Accuracy: +/- (6 fpm +5 percent of reading). Resolution: 2 fpm.