Dwyer 641-30 SKU: 641-30 $567.84 $676.00 (0)No Reviews yet Quantity -+ Add to Shopping Cart In Factory Stock Details Dwyer 641-30 : Air Velocity Transmitter, 30" Probe, 4 to 20 mA Output Signal Data Sheet Installation Instructions DetailsData SheetInstallation Instructions Back Dwyer 641-30 : Air Velocity Transmitter, 30" Probe, 4 to 20 mA Output Signal Back Back Reviews 0 Back Ratings & ReviewsNo reviews availableBe the first to Write a Review