Dwyer 641-30-LED SKU: 641-30-LED $716.14 $852.55 (0)No Reviews yet Quantity -+ Add to Shopping Cart In Factory Stock Details Dwyer 641-30-LED : Air Velocity Transmitter, 30" Probe, 4 to 20 mA Output Signal, LED Display Data Sheet Installation Instructions DetailsData SheetInstallation Instructions Back Dwyer 641-30-LED : Air Velocity Transmitter, 30" Probe, 4 to 20 mA Output Signal, LED Display Back Back Reviews 0 Back Ratings & ReviewsNo reviews availableBe the first to Write a Review