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We offer over 8000+ total Dwyer products, including accessories, air velocity transmitters, bin vibrators, CO2/Temp (Duct) sensors, and more. Shop now!
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![Dwyer DHC-002 Differential pressure controller | range 0.25 in w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/digihelic_front_inwc_1000x1000_b33dcc8a-5b48-4afa-b5e1-9c0c9e985857_medium.jpg?v=1719998760)
DHC-002 | Differential pressure controller | range 0.25 in w.c. | Dwyer
Brand: Dwyer
SKU: DHC-002
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![Dwyer 43400B Pressure switch/gage | range 0-400" w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/43000_both_0959b1b8-8ee9-4182-ab18-d8a58026a79c_medium.jpg?v=1719997838)
43400B | Pressure switch / gage | range 0-400" w.c. | Dwyer (OBSOLETE)
Brand: Dwyer
SKU: 43400B
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![Dwyer 43330B Pressure switch/gage | range 15-0-15" w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/43000_both_72ad5c80-c93a-45b4-93eb-531e6103546e_medium.jpg?v=1719997763)
43330B | Pressure switch / gage | range 15-0-15" w.c. | Dwyer (OBSOLETE)
Brand: Dwyer
SKU: 43330B
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![Dwyer 43205B Pressure switch/gage | range 0-5 psid. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/43000_both_11c10663-91d6-47e1-9595-ba870ad93bae_medium.jpg?v=1719998225)
43205B | Pressure switch / gage | range 0-5 psid. | Dwyer (OBSOLETE)
Brand: Dwyer
SKU: 43205B
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![Dwyer 43203B Pressure switch/gage | range 0-3 psid | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/43000_both_a050bc09-bc87-444c-952d-cd3c9eddc238_medium.jpg?v=1719997808)
43203B | Pressure switch / gage | range 0-3 psid | Dwyer (OBSOLETE)
Brand: Dwyer
SKU: 43203B
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![Dwyer 43201B Pressure switch/gage | range 0-1 psid. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/43000_both_404aaa8c-7060-4306-aef6-d8f85a17eeec_medium.jpg?v=1719997792)
43201B | Pressure switch / gage | range 0-1 psid. | Dwyer (OBSOLETE)
Brand: Dwyer
SKU: 43201B
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![Dwyer 43100B Pressure switch/gage | range 0-100" w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/43000_both_f5c2c11a-8467-4783-904c-343db1af2c9c_medium.jpg?v=1719997798)
43100B | Pressure switch / gage | range 0-100" w.c. | Dwyer (OBSOLETE)
Brand: Dwyer
SKU: 43100B
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![Dwyer 43200B Pressure switch/gage | range 0-200" w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/43000_both_eb4ab401-9b95-4d54-868a-cf9c6b4979ff_medium.jpg?v=1719997752)
43200B | Pressure switch / gage | range 0-200" w.c. | Dwyer (OBSOLETE)
Brand: Dwyer
SKU: 43200B
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![Dwyer 43080B Pressure switch/gage | range 0-80" w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/43000_both_99c97e1e-1731-49eb-b9e6-762223d761ba_medium.jpg?v=1719997748)
43080B | Pressure switch / gage | range 0-80" w.c. | Dwyer (OBSOLETE)
Brand: Dwyer
SKU: 43080B
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![Dwyer 43150B Pressure switch/gage | range 0-150" w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/43000_both_75fb15f5-f1d8-4950-b4b0-06205f17be2f_medium.jpg?v=1719997782)
43150B | Pressure switch / gage | range 0-150" w.c. | Dwyer (OBSOLETE)
Brand: Dwyer
SKU: 43150B
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![Dwyer 43040B Pressure switch/gage | range 0-40" w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/43000_both_b95399b7-194d-4fda-83f8-d0011f196bcf_medium.jpg?v=1719997777)
43040B | Pressure switch / gage | range 0-40" w.c. | Dwyer (OBSOLETE)
Brand: Dwyer
SKU: 43040B
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![Dwyer 43002B Pressure switch/gage | range 0-2.0" w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/43000_both_11be4199-7f2c-4e7d-89ad-78e03714d60f_medium.jpg?v=1719997752)
43002B | Pressure switch / gage | range 0-2.0" w.c. | Dwyer (OBSOLETE)
Brand: Dwyer
SKU: 43002B
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![Dwyer A3310 Pressure switch/gage | range 5-0-5" w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/a3000_ea07cebd-1d58-482a-89ef-f39f7ee35595_medium.jpg?v=1719998355)
A3310 | Pressure switch / gage | range 5-0-5" w.c. | Dwyer
Brand: Dwyer
SKU: A3310
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![Dwyer A3304 Pressure switch/gage | range 2-0-2" w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/a3000_cc1c88ce-cc89-4a89-a11a-5d6c111c7a41_medium.jpg?v=1719998325)
A3304 | Pressure switch / gage | range 2-0-2" w.c. | Dwyer
Brand: Dwyer
SKU: A3304
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![Dwyer A3330 Pressure switch/gage | range 15-0-15" w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/a3000_a299f965-cf67-445b-8563-3ab730e2bdc2_medium.jpg?v=1719998450)
A3330 | Pressure switch / gage | range 15-0-15" w.c. | Dwyer
Brand: Dwyer
SKU: A3330
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