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MTHO3A Temperature and Humidity Sensor Module
MTHO3A Temperature and Humidity Sensor Module

MTHO3A Temperature and Humidity Sensor Module

The MTHO3A module based on MEMS gas-sensing elements is used to test ambient temperature, humidity, and harmful substance content in the air. Test data is communicated via I²C or UART interface. The MEMS element surface can be protected with a filter membrane. The air quality sensor module can select plug-in or SMT assembly as needed.

Comprehensive and reliable evaluation of temperature, humidity, and air quality

Built-in temperature and humidity compensation algorithms

High sensitivity and fast response

Very low power consumption (< 66mW)

Small size (17.8mm×15.2mm×2.5mm)

Intelligent automatic baseline calibration

Baseline value can be reset, baseline storage is configurable

Robust design, excellent long-term stability

Highly flexible assembly methods and communication interfaces

Technical parameters

Detection Principle: MEMS Metal Oxide Semiconductor Sensor

Warm-up Time: 3 minutes

Communication Protocol: I²C, UART

Calibration Method: Intelligent baseline calibration, power-off storage with settable reference value

Voltage: 3.3V±0.1V, max. 20mV ripple

Power Consumption: Max. 66mW @3.3VDC (20mA)

Test Interval: 1 Sec.

Operating Temperature: -10 ~ +60 ℃

Operating Humidity: 5 ~95 % RH, non-condensing

Storage Temperature: -40 ~ 85 ℃

Storage Humidity: 5 ~95 % RH, non-condensing

CO2 Detection Range: 400-5000 ppm

TVOC Detection Range: 0 – 50000 ug/m3  

HCHO Detection Range: 0 – 2000 ug/m3

Temperature Detection Range: -40~125 ℃

Humidity Detection Range: 0~100%RH

Application scenarios

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