MT203 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)

• 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.

• 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.