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• 

  Siemens QFA4160 Temperature and Humidity Room Sensor, 0-10V, 2%, Certified

  $586.24
• 

  Siemens QFA4171 Temperature and Humidity Room Sensor, 4-20mA, 2%, Certified

  $586.24
• 

  Siemens QFA4171D Temperature and Humidity Room Sensor, Display, 4-20mA, 2%, Certified

  $657.70
• 

  Siemens QFM4160 Duct Temperature and Humidity Sensor Certified

  $586.24
• 

  Siemens QFM4171 Duct Temperature and Humidity Sensor Certified

  $569.16