Air velocity transmitters Air velocity Category/type
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![Dwyer 641-18-LED Air velocity transmitter | 18" (457.2 mm) probe length | with LED display. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/641_family_1000x1000_5125338a-390d-407b-a91c-f3a082269589_medium.jpg?v=1719998039)
641-18-LED | Air velocity transmitter | 18" (457.2 mm) probe length | with LED display. | Dwyer
Brand: Dwyer
SKU: 641-18-LED
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![Dwyer 641-24-LED Air velocity transmitter | 24" (609.6 mm) probe length | with LED display. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/641_family_1000x1000_965e6d34-16dc-4d0f-8274-d76e03fccc0b_medium.jpg?v=1719997971)
641-24-LED | Air velocity transmitter | 24" (609.6 mm) probe length | with LED display. | Dwyer
Brand: Dwyer
SKU: 641-24-LED
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![Dwyer 641-36 Air velocity transmitter | 36" (914 mm) probe length. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/641_family_1000x1000_060bbe76-3626-4138-950f-18436a788098_medium.jpg?v=1719997970)
641-36 | Air velocity transmitter | 36" (914 mm) probe length. | Dwyer
Brand: Dwyer
SKU: 641-36
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![Dwyer 641-12-LED Air velocity transmitter | 12" (304.8 mm) probe length | with LED display. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/641_family_1000x1000_b764587a-e881-484e-b638-959392fbf463_medium.jpg?v=1719997965)
641-12-LED | Air velocity transmitter | 12" (304.8 mm) probe length | with LED display. | Dwyer
Brand: Dwyer
SKU: 641-12-LED
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