Add to Cart Siemens QAD2020U Siemens MSRP: Now: $156.40 Was: Surface-mounted pipe sensor with Nickel 1K ohm sensig element and 2 x 4 utility box metal housing. QAD2020U
Add to Cart Siemens QAC2020U Siemens MSRP: Now: $109.91 Was: Outdoor air temperature sensor; 1K ohm at 32 degrees Fahrenheit, nickel sensing element; uses metal housing. QAC2020U
Add to Cart Siemens QFM81.21 Siemens MSRP: Now: $333.91 Was: Hygrostats are used for controlling and monitoring relative humidity in facilities under HVAC control. They ensure duct humidity control within the selectable range of 15 to 95% relative humidity... QFM81.21
Add to Cart Siemens GQD126.1P Siemens MSRP: Now: $351.99 Was: SR,20 LB-IN, 24VAC/DC,2-PT,SWITCHES GQD126.1P
Add to Cart Siemens GCA151.1P Siemens MSRP: Now: $639.58 Was: SR,160 LB-IN,24VAC/DC,0-10/2-10VDC GCA151.1P