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 - Sensors, Transducers
 - Temperature Sensors - Analog and Digital Output
 
| Image | Part # | Manufacturer | Description | Availability | Pricing | Quantity | Display | Manufacturer | Manufacturer Part Number | Applications | Output | Function | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|
  ![]()  |  Mfr. Part #QAM2030.020Twicea Part #4557-831-QAM2030.020 |  Siemens | 
                  Siemens Building Technologies HVAC Sensors
                  
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                 |  Min.:1  Mult.:1  |  No Display | Siemens Building Technologies | QAM2030.020 | Duct | 10 kOhm NTC | Temperature | ||
| QAM2030.020  |  ||||||||||||
  ![]()  |  Mfr. Part #536-752ATwicea Part #4557-831-536-752A |  Siemens | 
                  Siemens Building Technologies HVAC Sensors
                  
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                 |  Min.:1  Mult.:1  |  No Display | Siemens Building Technologies | 536-752A | Indoor | 4~20 mA | Temperature | ||
| 536-752A  |  ||||||||||||
  ![]()  |  Mfr. Part #536-753ATwicea Part #4557-831-536-753A |  Siemens | 
                  Siemens Building Technologies HVAC Sensors
                  
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                 |  Min.:1  Mult.:1  |  No Display | Siemens Building Technologies | 536-753A | Indoor | 4~20 mA | Temperature | ||
| 536-753A  |  ||||||||||||
  ![]()  |  Mfr. Part #536-778Twicea Part #4557-831-536-778 |  Siemens | 
                  Siemens Building Technologies HVAC Sensors
                  
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                 |  Min.:1  Mult.:1  |  No Display | Siemens Building Technologies | 536-778 | Outdoor | 100 kOhm NTC | Temperature | ||
| 536-778  |  ||||||||||||
  ![]()  |  Mfr. Part #536-784ATwicea Part #4557-831-536-784A |  Siemens | 
                  Siemens Building Technologies HVAC Sensors
                  
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                 |  Min.:1  Mult.:1  |  No Display | Siemens Building Technologies | 536-784A | Indoor | 100 kOhm NTC | Temperature | ||
| 536-784A  |  ||||||||||||
  ![]()  |  Mfr. Part #540-670BTwicea Part #4557-831-540-670B |  Siemens | 
                  Siemens Building Technologies HVAC Sensors
                  
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                 |  Min.:1  Mult.:1  |  No Display | Siemens Building Technologies | 540-670B | Indoor | 10 kOhm NTC | Temperature | ||
| 540-670B  |  ||||||||||||
  ![]()  |  Mfr. Part #540-680FBTwicea Part #4557-831-540-680FB |  Siemens | 
                  Siemens Building Technologies HVAC Sensors
                  
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                 |  Min.:1  Mult.:1  |  LCD | Siemens Building Technologies | 540-680FB | Indoor | 10 kOhm NTC | Temperature | ||
| 540-680FB  |  ||||||||||||
  ![]()  |  Mfr. Part #540-984Twicea Part #4557-831-540-984 |  Siemens | 
                  Siemens Building Technologies HVAC Sensors
                  
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                 |  Min.:1  Mult.:1  |  No Display | Siemens Building Technologies | 540-984 | Indoor | 10 kOhm NTC | Temperature | ||
| 540-984  |  ||||||||||||
  ![]()  |  Mfr. Part #544-343-18Twicea Part #4557-831-544-343-18 |  Siemens | 
                  Siemens Building Technologies HVAC Sensors
                  
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                 |  Min.:1  Mult.:1  |  No Display | Siemens Building Technologies | 544-343-18 | Duct | 1 kOhm Platinum RTD | Temperature | ||
| 544-343-18  |  ||||||||||||
  ![]()  |  Mfr. Part #544-770BTwicea Part #4557-831-544-770B |  Siemens | 
                  Siemens Building Technologies HVAC Sensors
                  
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                 |  Min.:1  Mult.:1  |  No Display | Siemens Building Technologies | 544-770B | Indoor | 1 kOhm Platinum RTD | Temperature | ||
| 544-770B  |  ||||||||||||
  ![]()  |  Mfr. Part #QAA1031.AATUTwicea Part #4557-831-QAA1031.AATU |  Siemens | 
                  Siemens Building Technologies HVAC Sensors
                  
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                 |  Min.:1  Mult.:1  |  No Display | Siemens Building Technologies | QAA1031.AATU | Indoor | 10 kOhm NTC | Temperature | ||
| QAA1031.AATU  |  ||||||||||||
  ![]()  |  Mfr. Part #QAC22Twicea Part #4557-831-QAC22 |  Siemens | 
                  Siemens Building Technologies HVAC Sensors
                  
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                 |  Min.:1  Mult.:1  |  No Display | Siemens Building Technologies | QAC22 | Outdoor | 1 kOhm Nickel RTD | Temperature | ||
| QAC22  |  ||||||||||||
  ![]()  |  Mfr. Part #QAD2030UTwicea Part #4557-831-QAD2030U |  Siemens | 
                  Siemens Building Technologies HVAC Sensors
                  
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                 |  Min.:1  Mult.:1  |  No Display | Siemens Building Technologies | QAD2030U | Pipe Surface | 10 kOhm NTC | Temperature | ||
| QAD2030U  |  ||||||||||||
  ![]()  |  Mfr. Part #QAM2021.020Twicea Part #4557-831-QAM2021.020 |  Siemens | 
                  Siemens Building Technologies HVAC Sensors
                  
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                 |  Min.:1  Mult.:1  |  No Display | Siemens Building Technologies | QAM2021.020 | Duct | 1 kOhm Nickel RTD | Temperature | ||
| QAM2021.020  |  ||||||||||||
  ![]()  |  Mfr. Part #QAM2021.750Twicea Part #4557-831-QAM2021.750 |  Siemens | 
                  Siemens Building Technologies HVAC Sensors
                  
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                 |  Min.:1  Mult.:1  |  No Display | Siemens Building Technologies | QAM2021.750 | Duct Averaging | 1 kOhm Nickel RTD | Temperature | ||
| QAM2021.750  |  ||||||||||||
  ![]()  |  Mfr. Part #536-774-25Twicea Part #4557-831-536-774-25 |  Siemens | 
                  Siemens Building Technologies HVAC Sensors
                  
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                 |  Min.:1  Mult.:1  |  No Display | Siemens Building Technologies | 536-774-25 | Immersion | 4~20 mA | Temperature | ||
| 536-774-25  |  ||||||||||||
  ![]()  |  Mfr. Part #QPA2284.EWSCTwicea Part #4557-831-QPA2284.EWSC |  Siemens | 
                  Siemens Building Technologies HVAC Sensors
                  
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                 |  Min.:1  Mult.:1  |  No Display | Siemens Building Technologies | QPA2284.EWSC | Indoor | - | Temperature, Gas, Humidity | ||
| QPA2284.EWSC  |  ||||||||||||
  ![]()  |  Mfr. Part #QAC2030Twicea Part #4557-831-QAC2030 |  Siemens | 
                  Siemens Building Technologies HVAC Sensors
                  
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                 |  63378279
                  In Stock
                  |  Min.:1  Mult.:1  |  No Display | Siemens Building Technologies | QAC2030 | Outdoor | 10 kOhm NTC | Temperature | |
| QAC2030  |  ||||||||||||
  ![]()  |  Mfr. Part #QAM2012.250Twicea Part #4557-831-QAM2012.250 |  Siemens | 
                  Siemens Building Technologies HVAC Sensors
                  
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                 |  Min.:1  Mult.:1  |  No Display | Siemens Building Technologies | QAM2012.250 | Duct Averaging | 1 kOhm Platinum RTD | Temperature | ||
| QAM2012.250  |  ||||||||||||
  ![]()  |  Mfr. Part #QAM2012.500Twicea Part #4557-831-QAM2012.500 |  Siemens | 
                  Siemens Building Technologies HVAC Sensors
                  
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                 |  Min.:1  Mult.:1  |  No Display | Siemens Building Technologies | QAM2012.500 | Duct Averaging | 1 kOhm Platinum RTD | Temperature | ||
| QAM2012.500  |  
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