MemsFrontier MTP80-A Dual Channel CO2 Sensor Module - NDIR, UART/I2C/PWM Output

The MTP80-A module requires a DC power supply between 4.2V and 5.5V. It is designed for standard 5V logic systems, making it directly compatible with Arduino Uno, ESP32 development boards, and other 5V microcontroller platforms without requiring a level shifter.

The module supports three output interfaces: UART (TTL serial), I2C, and PWM. The active interface is typically selected via a configuration command sent over the UART or by setting a configuration pin on the module. Refer to the manufacturer's datasheet for the specific protocol and pinout details for each mode.

The module features Automatic Baseline Calibration (ABC), which periodically adjusts the baseline in fresh air environments over a long period (e.g., 7 days). For accelerated calibration or specific reference points, a manual calibration command can be sent via the digital interface using a known concentration of CO2 (typically 400 ppm ambient air).

The MTP80-A is designed for a typical CO2 measurement range of 0 to 5000 ppm, which covers standard indoor air quality applications. Accuracy is typically within ±(50 ppm + 3% of reading) under stable temperature and humidity conditions, thanks to its dual-channel NDIR design and onboard compensation algorithms.

While the NDIR sensing element is robust, the module is rated for 0-90% RH non-condensing and an operating temperature of 0°C to 50°C. For outdoor or harsh industrial use, it must be placed in a sealed, IP-rated enclosure that protects it from direct moisture, condensation, and temperatures outside its specified range while allowing air exchange for gas sampling.