SEARCH NOW FOR ALL YOUR SIEMENS SOLUTIONS
Find PLC's, Replays, Contact Blocks, Input/Output Modules and More.
HVAC / Air Duct Sensor
Radwell is here to supply you with all your plant floor needs.
![SIEMENS](https://az343058.vo.msecnd.net/blueimages/US_brand_Siemens_en-US_2015_1050.jpg)
Radwell is not an authorised distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners. The depiction, description or sale of products featuring these names, trademarks, brands and logos is for identification purposes only and is not intended to indicate any affiliation with or authorisation by any rights holder.
Filter Results
Sorting/Paging
![SIEMENS 544-339-18](https://az343058.vo.msecnd.net/productimagethumbnails/d980019b1153422f87e7901cf7faa536.jpg)
SIEMENS
SIEMENS INDUSTRY
544-339-18
TEMPERATURE DUCT SENSOR, PT 1K OHM, 18" PROBE, MEASURING RANGE: -40 TO 180 DEG F
✓ IN STOCK!
€44.38
Buy Surplus As Low As
€27.38
€27.38
![SIEMENS 587-691](https://az343058.vo.msecnd.net/productimagethumbnails/70bf62f37c134c5f813a39041b20bf62.jpg)
SIEMENS
STAEFA CONTROL SYS
587-691
DISCONTINUED BY MANUFACTURER, DUCT POINT TEMPERATURE, SENSOR, 10K OHM
✓ IN STOCK!
€22.66
Buy Surplus As Low As
€17.94
€17.94
![SIEMENS QPA63.1](https://az343058.vo.msecnd.net/productimagethumbnails/a0c4f8e99af6436c8682e4e9dcce336b.jpg)
SIEMENS
LANDIS & GYR
QPA63.1
AIR QUALITY SENSORS, POWER SUPPLY: 24 VAC, OUTPUT SIGNAL: 0-10VDC, SENSOR: CO2 / COV, MOUNTING: ROOM, PROTECTION CLASS: IP30 / IP54
✓ IN STOCK!
Buy Surplus As Low As
€861.14
€861.14
Repair Your Items
€566.54
![SIEMENS FT-T1K1](https://az343058.vo.msecnd.net/productimagethumbnails/cdcbd85c76e74f7eafb645fedf061f4a.jpg)
SIEMENS
STAEFA CONTROL SYS
FT-T1K1
DISCONTINUED BY MANUFACTURER, TEMPERATURE SENSOR, AIR DUCT, 110 MM PROBE, PN10, 100MM, DISCONTINUED WITHOUT REPLACEMENT
Buy Surplus As Low As
€254.94
€254.94
Repair Your Items
€212.45
![SIEMENS TT-531-K](https://az343058.vo.msecnd.net/productimagethumbnails/4a3bf9c2427b4bb3b6e5b09d0286ec7f.jpg)
SIEMENS
LANDIS & STAEFA
TT-531-K
DISCONTINUED BY MANUFACTURER, AIR SENSOR, STA 1
✓ IN STOCK!
Buy Surplus As Low As
€42.77
€42.77
![SIEMENS 587-182](https://az343058.vo.msecnd.net/productimagethumbnails/5786a37b8466443c859fbc4a9d6b0498.jpg)
SIEMENS
STAEFA CONTROL SYS
587-182
DISCONTINUED BY MANUFACTURER, TEMPERATURE SENSOR, 10000OHM
✓ IN STOCK!
Buy Surplus As Low As
€73.65
€73.65
![SIEMENS 544-343](https://az343058.vo.msecnd.net/productimagethumbnails/aa131e49e8b8400e8c2751c90dca4c52.jpg)
SIEMENS
LANDIS & GYR
544-343
DUCT SENSOR 1000OHM PLATINUM RTD INPUT 18IN/PROBE
✓ IN STOCK!
€100.09
Buy Surplus As Low As
€76.48
€76.48
Repair Your Items
Contact Us
![SIEMENS 500-649706](https://az343058.vo.msecnd.net/productimagethumbnails/daabb56583c34df888d5f78c9ca949a0.jpg)
SIEMENS
PYROTRONICS
500-649706
DISCONTINUED BY MANUFACTURER, AIR DUCT MONITORING HOUSING, OPERATING TEMPERATURE RANGE / 32-100 DRGREE F, VELOCITY RANGE / 100-4000 FPM, 5 AMP, TUBE PRESSURE DIFFERENTIAL RANGE / .01-1.2 INC ...
✓ IN STOCK!
Buy Surplus As Low As
€113.31
€113.31
![SIEMENS QVM62.1](https://az343058.vo.msecnd.net/productimagethumbnails/4d671b4e23304b8aab4d33f7e46b065c.jpg)
SIEMENS
SIEMENS INDUSTRY
QVM62.1
AIR VELOCITY DUCT SENSOR, SENSOR AIR VELOCITY 0/3000FPM, 0-10 VDC
✓ IN STOCK!
€179.40
Buy Surplus As Low As
€107.64
€107.64
![SIEMENS QAM2030.010](https://az343058.vo.msecnd.net/productimagethumbnails/a1ce5a39fd6346b0997f4a3159d8ad32.jpg)
SIEMENS
SIEMENS INDUSTRY
QAM2030.010
TEMPERATURE SENSOR, DUCT TEMP, 4 INCH PROBE, NTC 10K OHM, 4-20 MA, POINT TYPE
✓ IN STOCK!
€29.27
Buy Surplus As Low As
€22.66
€22.66
![SIEMENS QFM-61](https://az343058.vo.msecnd.net/productimagethumbnails/e74890447d994c3296d156752c8271a1.jpg)
SIEMENS
ITE SIEMENS
QFM-61
DUCT SENSOR 24VAC 50/60HZ 2VA
€212.92
Buy Surplus As Low As
€106.70
€106.70
Repair Your Items
Contact Us
![SIEMENS QBM3020-10](https://az343058.vo.msecnd.net/productimagethumbnails/preview.jpg)
SIEMENS
QBM3020-10
AIR DUCT DIFFERENTIAL PRESSURE SENSOR, MEASURING RANGE: 0....1000 PA, INPUT: 13.5-33 VDC/24 VAC, OUT: 0....10V, (S55720-S237)
✓ IN STOCK!
€346.82
Buy Surplus As Low As
€208.09
€208.09
![SIEMENS 500-649706FA](https://az343058.vo.msecnd.net/productimagethumbnails/0971d06e36ed45a0b9f1cd14c8f9e71e.jpg)
SIEMENS
FARADAY
500-649706FA
AIR DUCT HOUSING MODEL 8741
€180.35
Buy Surplus As Low As
€108.59
€108.59
![SIEMENS 536-382](https://az343058.vo.msecnd.net/productimagethumbnails/preview.jpg)
SIEMENS
SIEMENS INDUSTRY
536-382
AIR VELOCITY SENSOR 2PIPE 12IN
€92.53
Buy Surplus As Low As
€55.71
€55.71
![SIEMENS 544-342-8](https://az343058.vo.msecnd.net/productimagethumbnails/f4c928ec1443405b8c5b9b1328eef441.jpg)
SIEMENS
SIEMENS INDUSTRY
544-342-8
DUCT AVG. TMP, 1K OHM, PT(375), 8', FLEX
€152.97
Buy Surplus As Low As
€92.53
€92.53
![SIEMENS QFA3010.BU](https://az343058.vo.msecnd.net/productimagethumbnails/563934cdaf8f4b87a03ce5b17f14c5fc.jpg)
SIEMENS
QFA3010.BU
TEMPERATURE SENSOR
Buy Surplus As Low As
€498.56
€498.56
Repair Your Items
€415.46
![SIEMENS 544-342](https://az343058.vo.msecnd.net/productimagethumbnails/48679a93ac254a3b83d026a35a071356.jpg)
SIEMENS
LANDIS & GYR
544-342
**** PROBE LENGTH REQUIRED*****TEMPERATURE DUCT SENSOR
Buy Surplus As Low As
€104.81
€104.81
Repair Your Items
Contact Us
![SIEMENS DI-B3H](https://az343058.vo.msecnd.net/productimagethumbnails/dac32793c27e4fa7bd47054dc7dfae71.jpg)
SIEMENS
PYROTRONICS
DI-B3H
IONIZATION DETECTOR, FOR AIR DUCT, PLUG-IN, FOR 2 WIRE SYSTEM
€330.48
Buy Surplus As Low As
€198.29
€198.29
Repair Your Items
€175.00
![SIEMENS RNI-CAB-BRKT](https://az343058.vo.msecnd.net/productimagethumbnails/preview.jpg)
SIEMENS
PYROTRONICS
RNI-CAB-BRKT
MOUNTS RNI IN CAB-1, CAB-2, CAB-3 ENCLOSURE
€155.80
Buy Surplus As Low As
€93.48
€93.48
![SIEMENS FK-TP/200](https://az343058.vo.msecnd.net/productimagethumbnails/b66daf32f56540e294afcb7956b0d686.jpg)
SIEMENS
STAEFA CONTROL SYS
FK-TP/200
DISCONTINUED BY MANUFACTURER, DUCT TEMPERATURE SENSOR
Buy Surplus As Low As
€113.31
€113.31
Repair Your Items
Contact Us
![SIEMENS 587-692](https://az343058.vo.msecnd.net/productimagethumbnails/920e4c87049148b08b72a62ca0afb169.jpg)
SIEMENS
587-692
SIEMENS, 587-692, 587692, MODEL: 010516, OUTSIDE AIR TEMPERATURE SENSOR, 10K OHM THERMISTOR, 0 TO 120F AIR
Buy Surplus As Low As
€17.00
€17.00
Repair Your Items
Contact Us
![SIEMENS FKA-Q1/T1](https://az343058.vo.msecnd.net/productimagethumbnails/6373494ffb474529a611a995f24ab1c9.jpg)
SIEMENS
STAEFA CONTROL SYS
FKA-Q1/T1
DUCT TEMPERATURE SENSOR
Buy Surplus As Low As
€328.59
€328.59
![SIEMENS S55720-S492](https://az343058.vo.msecnd.net/productimagethumbnails/preview.jpg)
SIEMENS
SIEMENS INDUSTRY
S55720-S492
QSM2162 - DUCT FINE DUST SENSOR PM, REL. HUMIDITY AND TEMPERATURE
€904.00
Buy Surplus As Low As
€543.00
€543.00
![SIEMENS 538-894](https://az343058.vo.msecnd.net/productimagethumbnails/e0f402b717584a6388bff70b0ef04fc7.jpg)
SIEMENS
LANDIS & GYR
538-894
HUMIDITY/TEMPERATURE DUCT SENSOR
Buy Surplus As Low As
€487.22
€487.22
Repair Your Items
€406.02
![SIEMENS 535-492](https://az343058.vo.msecnd.net/productimagethumbnails/57e3174b7e264067b0e1952a1ff9b04d.jpg)
SIEMENS
LANDIS & GYR
535-492
DISCONTINUED BY MANUFACTURER, DUCT AVERAGING SENSOR, 24INCH, REPLACED BY 535-490-24
Buy Surplus As Low As
€141.64
€141.64
![SIEMENS 536-299](https://az343058.vo.msecnd.net/productimagethumbnails/preview.jpg)
SIEMENS
LANDIS & GYR
536-299
DUCT HUMIDITY SENSOR
Buy Surplus As Low As
€158.63
€158.63
Repair Your Items
Contact Us
![SIEMENS 8717](https://az343058.vo.msecnd.net/productimagethumbnails/6af3faafefb24cd08d9605da2177cbf7.jpg)
SIEMENS
FARADAY
8717
DISCONTINUED BY MANUFACTURER, AIR DUCT HOUSING, ALARM LED VISIBLE FROM FRONT, .63-2.64% PER FT, CLEAR COVER, WITH RELAY, USE FAR-8743
Buy Surplus As Low As
€79.32
€79.32
![SIEMENS DA-4](https://az343058.vo.msecnd.net/productimagethumbnails/8a32056867904cde9953b2c1b443fff5.jpg)
SIEMENS
PYROTRONICS
DA-4
DISCONTINUED BY MANUFACTURER, AIR DUCT DETECTOR
Buy Surplus As Low As
€339.92
€339.92
Repair Your Items
€283.27
![SIEMENS S55720-S493](https://az343058.vo.msecnd.net/productimagethumbnails/preview.jpg)
SIEMENS
SIEMENS INDUSTRY
S55720-S493
AQS2100 FINE DUST SENSOR REPL. MODULE
€270.00
Buy Surplus As Low As
€162.00
€162.00
![SIEMENS S55720-S491](https://az343058.vo.msecnd.net/productimagethumbnails/preview.jpg)
SIEMENS
SIEMENS INDUSTRY
S55720-S491
QSM2100 FINE DUST SENSOR DUCT, 0-10V
€700.00
Buy Surplus As Low As
€420.00
€420.00
![SIEMENS AD2-XHR-RC](https://az343058.vo.msecnd.net/productimagethumbnails/de265dc711a94f6eaef0734cbf47e814.jpg)
SIEMENS
AD2-XHR-RC
DISCONTINUED BY MANUFACTURER, AIR-DUCT HOUSING, FOR USE WITH FP-11, HFP-11 AND HFPO-11, WITH RELAY, 500-649708, 32F-100F, NO ALTITUDE LIMITATIONS
Buy Surplus As Low As
€288.94
€288.94
Repair Your Items
€240.78
![SIEMENS S55720-S123](https://az343058.vo.msecnd.net/productimagethumbnails/preview.jpg)
SIEMENS
SIEMENS INDUSTRY
S55720-S123
QPM1100 DUCT SENSOR VOC
€271.94
Buy Surplus As Low As
€163.35
€163.35