CO₂, Temperature & Humidity 3-in-1 Air Quality Monitor
The MT203 is Gold-Pick's cost-effective 3-in-1 air quality monitor, designed for small and mid-sized indoor spaces such as offices, classrooms and meeting rooms. It monitors CO₂ concentration, temperature and humidity simultaneously, helping you track ventilation efficiency and comfort.
CO₂ concentration is a key indicator of indoor air quality; high levels can cause fatigue, reduced concentration and even health risks. With a high-precision sensing module and real-time display, the MT203 clearly tells you when to open a window or switch on fresh-air ventilation. Compact and easy to install, it can work with a back-end management platform, making it a high-value solution for basic indoor air quality monitoring.
- Detects CO₂, humidity and temperature
- Traffic-light indicator
- Hibernation mode reduces battery consumption
- Wireless installation with anti-theft protection
- Supports data storage and retransmission
- 2.13-inch E-ink display (MT203)
- Expressive emoticons (MT203)
- Battery life of up to 3 years (MT203) / 4 years (MT203L)
3-in-1 Sensor
Embedded high-precision sensors constantly track invisible changes in the air.
Humidity
High humidity means damp air, which can contribute to colds, flu and other illnesses.
CO₂
On the upgraded MT203, CO₂ and temperature readings are shown in bold for clear visibility in larger spaces.
Temperature
Low temperatures may weaken immunity and increase the spread of viruses.
See CO₂ directly: real-time indoor air quality display
- Traffic-light indicator Green: excellent air quality; Yellow: consider opening a window or turning on ventilation; Red: open a window or turn on ventilation immediately.
- Emoji Icons The E-ink display shows air quality intuitively with emoticons, easy to understand at a glance.
- Clearer Readings CO₂ and temperature readings are bold and enlarged, easy to read even from a distance.
Compact Design, Two Models
MT203
E-Ink display · Switchable light/dark mode
MT203L
No E-Ink display · Longer battery life
* When the temperature detected by the MT203 is outside 0°C–40°C, the display turns off automatically
Smart Mode and Hibernation Mode for Maximum Power Saving
- Smart Mode Saves Power When newly collected data is close to the previous reading (temperature ≤ ±0.5°C, humidity ≤ ±3%, CO₂ ≤ ±50 ppm), the display does not refresh, saving power; the refresh interval is configurable from 2 to 1080 minutes.
- Ultra-Low Power Hibernation Mode Enable hibernation when the device is not in use for a period of time: data reception turns off automatically, saving even more power than smart mode. You can also keep data uploads on during hibernation and save only display power.
Battery Life Options
- Replaceable Battery Embedded 2 × 2700 mAh ER14505 Li-SOCl₂ batteries ensure a service life of 3+ years.
- MT203 / MT203L Battery life: 3 years (MT203) / 4 years (MT203L).
LoRaWAN® Wireless Transmission for Easier Deployment
High Compatibility
Compatible with standard LoRaWAN® gateways and network servers; works with the MT75 LoRaWAN® gateway and the Gold-Pick cloud platform.
A Better Way to Install
Wall mount
