SRC-C - Indoor


Indoor CO2 desktop monitor with CO2 level indication.

The SRC-C is an indoor CO2 monitoring desktop unit. Three LEDs in the colors green, orange and red indicate the CO2 concentration of the room air. This shows the user when to ventilate.

Default CO2 indication setting 

 LED  Air quality  CO2 range in ppm
 Green  High air quality (low CO2 level)  0…699
 Green + Orange  Good air quality  700…999
 Orange  Moderate air quality (medium CO2 level)  1000…1299
 Orange + Red  Low air quality  1300…1599
 Red  Poor air quality (high CO2 level)  1600…2000

The CO2 concentration is measured through non-dispersive infrared (NDIR) waveguide technology with ABC automatic
background calibration algorithm. The applied measuring technology guarantees excellent reliability and long-term stability. The microprocessor samples the CO2 once per second. It calculates an averaging signal over a preset number of samples and generates the output signal.

A simple USB wall charger is used to power the unit.


  • Indoor CO2 measurement (home, office, school, restaurant, greenhouse, …)
  • Recording of minimum and maximum CO2 limits for critical environments


You can directly order this product in our web shop:  Vector Controls Web Shop


  • Indoor CO2 measurement
  • Indication with three separate color LEDs
  • Includes a desktop stand
  • A simple USB wall charger powers the unit (supplied)
  • Minimum and maximum value memory
  • Levels of CO2 indication programmable
  • Automatic CO2 background calibration
  • Averaging signal adjustable
  • Optional external display (OPA-S)
  • Status LED


 Product name  Product No.  Description
 SRC-C  40-300201  Indoor CO2 monitor with desktop stand and USB wall charger with USB-C cable


OPA-S - Remote Display
Operation and display for intelligent transmitters


Operation Manual

Install Sheet

Application Notes