ECO 420 Compact CO2 monitor

Features:

✔ Modern and functional housing

✔ Wide measuring range: up to 19999 ppm / 2% CO2 (variant -20)

✔ Rechargeable via micro USB socket

✔ 24 hours battery life

✔ Backlight

✔ Ideal for air quality and air hygiene monitoring

✔ Hold-function to freeze measured values

✔ With metal belt clip and lanyard

Compact CO2 monitor with alarm for many applications in air quality monitoring, green houses, energy management and for research and education. The CO2 is measured with a high-class non-dispersive infrared (NDIR) sensor via opening at instruments head. Simultaneous display of time weighted average exposure over 8 hours (TWA) or 15 minutes (STEL).
CO2 – Dangerous at concentration > 3% The ECO420 is an ideal measuring warning instrument for moderate but non-dangerous levels – it is no replacement for personal safety equipment to be used in areas with potentially dangerous atmosphere.

Description

ECO 420 – Compact CO₂ monitor with alarm (formerly G 1910)

Compact ECO 420 Compact CO2 monitor with alarm for many applications in air quality monitoring, green houses, energy management and for research and education.

The CO2 is measured with a high-class non-dispersive infrared (NDIR) sensor via opening at instruments head.

Simultaneous display of time weighted average exposure over 8 hours (TWA) or 15 minutes (STEL).

CO2 – Dangerous at concentration > 3%
The ECO420 is an ideal measuring warning instrument for moderate but non-dangerous levels – it is no replacement for personal safety equipment to be used in areas with potentially dangerous atmosphere.

ATTENTION:
Never enter potentially dangerous areas where CO2 may exceed 3% or 30000 ppm CO2 without additional personal safety equipment!

Display
Thanks to the backlight, the three-line LCD display offers ergonomic wide-angle visibility – by day and by night.
The HOLD function enables the display values to be frozen.

Power supply
2 powerful AA NiMH rechargeable batteries, the energy-saving design and the configurable automatic switch-off function ensure long operation.
Configurable LCD backlight for further energy-saving options.

The ECO 420 is a portable and easy-to-use CO₂ monitor designed for real-time indoor air quality assessment. Featuring a clear display and compact footprint, it accurately measures carbon dioxide (CO₂) concentration, helping users maintain a safe, healthy, and well-ventilated environment.

Ideal for classrooms, offices, meeting rooms, public spaces, and homes, the ECO 420 supports awareness and compliance with indoor air quality guidelines by offering a visual indicator of ventilation effectiveness and CO₂ build-up.

Technical Data

Technical Specifications

Protection class

IP30

Accuracy

±70 ppm CO2 ±3% of reading)

Power supply

2 x AA rechargeable NiMH batteries (scope of delivery),
consumption approx. 50 mA, operating time > 24 hours for
NiMH batteries (without backlight). Recharging time ~ 8 hours

Housing material

Break-proof ABS-housing

Weight

approx 160 g

Power consumption

ca. 50 mA

Operating conditions

0 to 50 °C; 0 to 85 % r.h. (non-condensing)

Storage temperature

-20 ... +70 °C (without batteries)

Dimensions

108 x 54 x 28 mm

APPLICATIONS

Air Quality Monitoring
- Measuring CO₂ concentration to assess and maintain healthy indoor environments.
Air Hygiene Monitoring
- Ensures ventilation adequacy in closed or semi-enclosed spaces like offices, classrooms, or conference rooms.
Greenhouses
- Tracks CO₂ levels to optimize plant growth and photosynthesis.
Energy Management
- Helps optimize HVAC operation by monitoring indoor CO₂ for demand-controlled ventilation.
Research and Education
- Ideal for use in labs, universities, and schools for demonstrations or environmental studies.