Using a STR35X with a CO2 sensor or humidity sensor

Issue

  • How to display humidity level or CO2 level on a STR350/STR351?
  • What type of sensor can display humidity or CO2 level?

Product Line

TAC Vista

Environment

  • STR 350
  • SHR 100

Cause

All Schneider Electric made humidity sensors and CO2 sensors do not have display. In order to display the value locally, need to wire the sensor to a STR 350, and configure the STR 350 for display.

Resolution

  1. Wire humidity sensor or CO2 sensor to STR 351 or STR 351's AUX. input channels.
  2. Following Lessons Learned Article #4346 to add the STR 350 or STR351 into the network.
  3. Change nciOption2 bit 6-8 according to the sensor type.
    Note: If using a plug in or adding the STR 35X in Xbuilder, can simply follow the configuration guide.
  4. Set nciOptioin2 bit 9 to a value of 1. This allows the humidity or CO2 to be displayed on the STR.