Air pressure switches Pneumatic controllers and transmitters Type
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![Johnson Controls S-224-1 SWITCH; GRAD; 20PSI SPAN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/S-224-1_aef1841e-1f9b-4789-a259-d16b270e0676_medium.png?v=1719993633)
S-224-1 | SWITCH; GRAD; 20PSI SPAN | Johnson Controls
Brand: Johnson Controls
SKU: S-224-1
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![Johnson Controls P40AA-1C PNEUMATIC SENSITIVE DIFF; DIFFERENTIAL AIR PRESSURE SWITCH; AIR FLOW; .12/2.0 WC CLOSE HIGH PNEUMATI | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/P40AA-1C_fe719c91-6e91-4c67-9464-8dea5820aef8_medium.jpg?v=1719993518)
P40AA-1C | PNEUMATIC SENSITIVE DIFF; DIFFERENTIAL AIR PRESSURE SWITCH; AIR FLOW; .12 / 2.0 WC CLOSE HIGH PNEUMATI | Johnson Controls
Brand: Johnson Controls
SKU: P40AA-1C
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iO-WR-XR | Extended Range wireless relay kit | iO HVAC Controls (OBSOLETE)
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