
Outdoor, Surface, Duct Temperature  
Sensors — Various Outputs
Premium
Temperature Sensors
QAC31xx Series Outdoor SensorQAM21 Series Duct Sensor
QAD20xx Series Surface SensorQAC2xxx Series Outdoor Sensor
Description
Our premium line of temperature sensors are designed 
to install easily and to bring a sleek modern look to the 
nished project. These sensors are available with active 
or passive output signals. The duct sensors with active 
outputs can be quickly adapted to the application using 
a number of different, easily-adjustable measurement 
ranges.
Features
• Wide choice of products covering all common measurement ranges and output signals
• Precise engineering delivers balanced measurement 
weighting, short reaction times, and high measuring 
accuracy
• Innovative housing designs enable simple installation 
and provide a professional nished appearance
Applications
Siemens offers a complete line of temperature sensors 
that are employed throughout the HVAC system to ensure 
occupant comfort and maximum system efciency.
E-23
Sensors
www.usa.siemens.com/hvac

Premium Temperature Sensor Specifications
E-24
Sensors
Output Signals
 Active.......................................................................................... 4-20mA
      0-10VAC
 Passive ......................................... Platinum and Nickel1k Ω (385 alpha)
     Ni 1k Ω @32F 
     NTC 10k Ω Type II
Refer to Technical Specication Sheets for additional details
Premium Temperature Sensor Product Ordering
Application Description Output Signal Part Number Range Data Sheet
Duct 
Averaging
Duct 
Point
Surface Mount 
Pipe Temp
Duct Averaging Sensor with 19.5 ft. Probe
Duct Averaging Sensor with 6.5 ft. Probe QAM2120.200 149-805
Duct Averaging Sensor with 6.5 ft. Probe Platinum 1k Ω  
Duct Temp Sensor with 16" Probe 0-10V QAM2161.040 58 to 122F
Duct Temp Sensor with 16" Probe 4-20 mA QAM2171.040 149-805
Duct Temp Sensor with 16" Probe Nickel 1k Ω @ 32F QAM2120.040
Duct Temp Sensor with 16" Probe NTC 10k Ω Type 2 QAM2130.040 149-805
Duct Temp Sensor with 16" Probe Platinum 1k Ω  
Outdoor Air Temp
Pipe Temp Sensor NTC 10k Ω Type 2 QAD2030 149-806
Pipe Temp Sensor Platinum 1k Ω 
Nickel 1k Ω @ 32F
385 alpha
375 alpha
0-10V QAC3161
4-20 mA QAC3171 149-808
NTC 10k Ω Type 2 QAC2030
Platinum 1k Ω 
375 alpha
Nickel 1k Ω @ 32F QAC22 149-808
375 alpha
QAM2120.600
Controller 
QAM2112.200 149-805
QAM2112.040 149-805
QAC2012 149-808
QAD2012 149-806
Dependent
-31 to 95F
32 to 122F
(selectable)
Controller 
Dependent
-58 to 122F
Controller 
Dependent
149-805
149-805
149-805
149-808
149-808
www.usa.siemens.com/hvac