Relative humidity and temperature transmitter
Geosignal

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  Immersion temperature probe
  

Humidity sensors, Transmitters

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  Relative humidity sensor
  

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  Pressure data-logger
  PF100 / PF102 / DPF102
  
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  Cost effective temperature data logger
  F412 / F812
  

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  Relative humidity and temperature data-logger
  F100
  

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  Universal wireless data-logger
  R400
  
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  Universal miniature data-logger
  MK400
  
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  Universal data-logger with GSM / GPRS module
  MK824 / GSM / MK824
  

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  Portable data acquisition system
  813CD / 88C
  

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  Carbon dioxide (CO2) detector
  S133