Rotating Vane, Probe Type Rotating Vane, Features 16 Sensing Points Provide an Accurate Average Flow, Maximum Reach 48 in, Maximum Hot Wire Probe Length Not Applicable, Minimum Hot Wire Probe Length Not Applicable, Minimum Temperature Measured -40 Degrees F, Minimum Velocity Measured 1, 000 fpm, Maximum Temperature Measured 257 Degrees F, Maximum Velocity Measured 5, 000 fpm, Air Velocity Accuracy +/-2 Percent. This item has been restricted from sale in the following state (s): []