SRC-H1 - Indoor


Active humidity transmitter for indoor mounting

A unique capacitive sensor element is used for measuring relative humidity. The applied measuring technology guarantees excellent reliability and long term stability. The microprocessor samples the humidity once per second. Ranges can be defined by using a programming tool.


  • Indoor humidity measurement for heating, ventilation and air conditioning applications
  • Recording of minimum and maximum values for critical environments
  • Supervision of critical humidity


  • Indoor humidity measurement
  • For AES4: Sensor reconditioning function against contamination
  • For AES4: Anti-Creep function for high humidity environments
  • Replaceable sensor element
  • Minimum and maximum value memory
  • Optional alternative signal ranges programmable
  • Selectable averaging signal
  • Optional external display (OPU-S)
  • Status LED


 Item name  Item code  Definition
 SRC-H1-A3  40-300140  Humidity transmitter 


OPA-S - Remote Display
Operation and display for intelligent transmitters
OPU-S - Remote Display
Operation and display for intelligent transmitters
AES3-HT / AES4-HT - Humidity/Temperature Sensor
For indoor, outdoor and duct transmitters and PI-universal controls


Operation Manual

Install Sheet

Application Notes