indoor CO2 monitor

ES-G01 indoor CO2 air quality monitor


CO2 + Temperature + Humidity Monitor/Controller
  • Monitoring real-time carbon dioxide and temp. & RH
  • Display 24-hour CO2 average and max. value is option
  • 3-color backlight LCD
  • Optional 1x on/off output to control a ventilator
  • Modbus RS485 communication
  • Three power supply available:
    • 24VAC/VDC, 100~240VAC, USB or DC power adaptor
  • Wall mounting or desktop placement
  • Over 100000 sales, with a high-quality and perfect reputation



CO2 monitor is used to monitor/alarm indoor CO2 concentration as well as temperature and humidity. It’s installed on the wall or on the desktop.

  • Schools, offices, hotels, meeting rooms
  • Shops, restaurants, hospitals, theatres
  • Airports, train stations, and other public places
  • Any other public places
  • Apartments, houses
  • All ventilation systems


  • Real-time monitoring room carbon dioxide, temperature and humidity
  • Optional display 24h average and max. CO2
  • NDIR CO2 sensor with Self Calibration. It makes CO2 measurements more accurate
    and reliable.
  • Up to 15 years lifetime of CO2 sensor
  • Three-color (Green/Yellow/ Red) LCD indicates CO2 three ranges and ventilation level optimal/
  • Buzzer alarm available
  • Optional 1xrelay output to control a ventilator
  • Touch button for easy operation
  • 24VAC/VDC or 100~240V or USB 5V power supply
  • Wall mounting or desktop placement available
  • High quality with excellent performance, the best choice for schools and offices
  • CE-approval


features specification
Power supply 100~240VAC or 24VAC/VDC wire connecting. USB 5V (>1A for USB adaptor) 2 4 V with an adaptor
Consumption 3.5 W max.; 2.5 W avg.
Gas detected Carbon Dioxide (CO2)
Sensing element Non- Dispersive Infrared Detector (NDIR)
Accuracy@2 5 C (7 7 ℉) ±50ppm + 3% of reading
Stability <2% of FS over life of sensor (15 yr typical)
Calibration interval ABC Logic Self Calibration Algorithm
CO2 sensor life 15 years
Response Time <2 minutes for 90% step change
Signal update Every 2 seconds
Warm up time <3 minutes (operation)
CO2 measuring range 0 ~5,000 ppm
CO2 Display resolution 1ppm
3-color backlight for CO2 range Green: < 1000ppm Yellow: 1001~ 1400ppm Red: > 1400ppm
LCD Display Real time CO2, Temp &RH Optional 24h average/max. CO2
Temperature measuring range -2 0 ~ 60 C(- 4 ~ 14 0 ℉ )
Humidity measuring range 0 ~ 99 % RH
Relay output (optional) One relay output with rated switching current: 5 A, resistance load
Operation conditions -20~60C(32~ 122℉); 0~95%RH, non-condensing
Storage conditions 0~50C(14~ 140℉), 5~70%RH
Dimensions/ Weight 130mm(H) ×85mm(W) ×36.5mm(D) / 200g
Housing and IP class PC/ABS fireproof plastic material, protection class: IP30
Installation Wall mounting (65mm×65mm or 2” × 4” wire box) Desktop placement
Standard CE-Approval

manual & docs

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