pneumatic humidistats
Pneumatic HVAC humidistats. Humidity controllers and transmitters for pneumatic HVAC control systems. For regulating space humidity with compressed air, buy now!
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![Siemens 186-0088 Hygrostat, Duct, Pneumatic, RA, 20% to 90% RH, with Cover and Wall Plate | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/186-0088_medium.jpg?v=1692718901)
186-0088 | Hygrostat, Duct, Pneumatic, RA, 20% to 90% RH, with Cover and Wall Plate | Siemens
Brand: Siemens
SKU: 186-0088
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![Siemens 186-0091 Hygrostat, Duct, Pneumatic, RA, 25% to 65% RH, with Cover and Wall Plate | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/186-0091_medium.jpg?v=1692718966)
186-0091 | Hygrostat, Duct, Pneumatic, RA, 25% to 65% RH, with Cover and Wall Plate | Siemens
Brand: Siemens
SKU: 186-0091
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![Siemens 186-0043 Humidity Transmitter, Room, DA, 1-Pipe | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/186-0043_medium.jpg?v=1692718881)
186-0043 | Humidity Transmitter, Room, DA, 1-Pipe | Siemens
Brand: Siemens
SKU: 186-0043
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![Siemens 134-1861 Humidistat, SPDT, 120/240V | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/134-1861_medium.jpg?v=1692718540)
134-1861 | Humidistat, SPDT, 120 / 240V | Siemens
Brand: Siemens
SKU: 134-1861
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![Siemens 186-062 Membrane Element Kit, Product Group 186 | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/logo_b8ae1303-9ec3-42fb-8055-6b13bb366f29_medium.png?v=1692718991)
186-062 | Membrane Element Kit, Product Group 186 | Siemens
Brand: Siemens
SKU: 186-062
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![Siemens 186-0090 Hygrostat, Duct, Pneumatic, RA, 55% to 95% RH, with Cover and Wall Plate | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/186-0090_medium.jpg?v=1692718973)
186-0090 | Hygrostat, Duct, Pneumatic, RA, 55% to 95% RH, with Cover and Wall Plate | Siemens
Brand: Siemens
SKU: 186-0090
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![Siemens 186-0089 Humidity Transmitter, Duct, DA, 1-Pipe, Bimetal temperature compensation | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/186-0089_medium.jpg?v=1692718957)
186-0089 | Humidity Transmitter, Duct, DA, 1-Pipe, Bimetal temperature compensation | Siemens
Brand: Siemens
SKU: 186-0089
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![Siemens 186-0019 Hygrostat, Room, Pneumatic, RA, 20% to 90% RH, with Cover and Wall Plate | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/186-0019_medium.jpg?v=1692718860)
186-0019 | Hygrostat, Room, Pneumatic, RA, 20% to 90% RH, with Cover and Wall Plate | Siemens
Brand: Siemens
SKU: 186-0019
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![Siemens 186-0013 Hygrostat, Room, Pneumatic, DA, 20% to 90% RH, with Cover and Wall Plate | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/186-0013_medium.jpg?v=1692718857)
186-0013 | Hygrostat, Room, Pneumatic, DA, 20% to 90% RH, with Cover and Wall Plate | Siemens
Brand: Siemens
SKU: 186-0013
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