YJJ Mini600-CO₂ Ultra-small Integrated Non-dispersive Infrared (NDIR) CO₂ Sensor Module

Product Description:

YJJ Mini600-CO₂ Ultra-small Integrated Non-dispersive Infrared (NDIR) CO₂ Sensor Module

Features:

I. Product Positioning
Mini600-CO2 is an ultra-small integrated non-dispersive infrared (NDIR) CO2 sensing module, which is compatible with the core sensing unit of your previous Type-C plug-in portable detector (MPD-BTIC1). It focuses on miniaturization, low power consumption, built-in temperature and humidity compensation, and built-in ABC automatic baseline calibration. It is specifically designed for handheld devices, direct plug-in into mobile phones, and small IoT devices.
II. Complete Core Parameters (25℃, 1 atm standard air environment)
1. CO2 Gas Detection Performance
Detection Principle: Single-channel dual-wavelength NDIR infrared absorption method
Measurement Range: 0 - 6000 ppm
Measurement Accuracy:
400 - 2000 ppm: ±(30 ppm + 3% reading)
2000 - 6000 ppm: ±5%FS
Resolution: 1 ppm
Response Time: T90 ≤ 28 s; T60 ≤12 s
Zero-point drift: ≤ 15 ppm/year, built-in ABC automatic baseline correction (no need for manual regular calibration)
Cross-interference: Strong anti-interference against VOC, water vapor, dust, and carbon monoxide, without electrochemical sensor poisoning and failure issues
2. Integrated temperature and humidity sensing unit
Temperature measurement range: 0℃~+50℃, temperature measurement accuracy ±0.4℃
Humidity measurement: 0~99% RH, accuracy ±3% RH
Function: Real-time temperature and humidity compensation for CO2 concentration value, and can simultaneously output temperature and humidity data for comfort level / dew point calculation
3. Electrical and communication specifications
Power supply voltage: DC 4.8~5.5V (Type-C 5V USB direct supply, compatible with mobile phones / power banks / computers)
Working current: typical 52 mA; standby sleep current ≤1.8 mA
Output interface (dual output):
UART TTL serial port: 3.3V level, standard MODBUS protocol, for MCU secondary development
BLE Bluetooth 5.0 (derivative Mini600-CO2-BT): wireless transmission of CO2/temperature and humidity to mobile phone APP
Data refresh frequency: 1 Hz (outputting a complete set of data every second)
4. Physical structure and environmental tolerance
Size: 28×28×12 mm, micro square structure, can be integrated with Type-C female connector to make a plug-in portable module
Ventilation protection: PTFE dust-proof and waterproof breathable filter membrane, blocking dust, liquid water vapor, only gas molecules pass through
Working environment: 0℃~50℃, 0~90% RH (no condensation)
Storage environment: -20℃~70℃
Service life: ≥5 years (infrared light source has no consumable parts, far superior to electrochemical CO2 sensor)
III. Working principle
Infrared light source emits 4.26μm characteristic infrared light (CO2 exclusive absorption band);
CO2 molecules in the gas chamber absorb specific wavelength light, the photoelectric detector detects the degree of light intensity attenuation;
The chip has built-in algorithms to convert the CO2 concentration, and at the same time reads the data from the built-in temperature and humidity chip to correct the measurement deviation caused by the environment;
Output standardized concentration, temperature, and humidity data through serial port / Bluetooth.
IV. Main application scenarios
1. Portable mobile detection instrument (core accessory)
As the core sensor of the light blue Type-C plug-in air quality probe (MPD-BTIC1) in your picture; powered by USB of mobile phone / tablet / laptop, APP displays CO2, temperature, and humidity in real time, oxygen deficiency warning in enclosed spaces (>1000ppm air pollution, >2500ppm prone to dizziness and sleepiness).
2. Indoor household air quality equipment
Desktop mini CO2 alarm, bedroom / study air monitor;
Intelligent ventilation system, air purifier built-in sensing module,- fan for automatic ventilation.
3. Educational / physical experiment equipment
Primary and secondary schools, universities biology experiments: collection of CO2 concentration changes during plant photosynthesis and respiration; portable without power constraint, visual reading on mobile phone.
4. Agricultural greenhouse planting
Garden, plant cultivation box inspection, monitoring CO2 concentration to regulate ventilation and gas fertilizer release, improving crop yield; can be made into handheld inspection equipment.
5. Small commercial environment monitoring
Portable inspection for offices, meeting rooms, guesthouses, tea houses, classrooms; no wiring, plug-and-play measurement, quick assessment of indoor ventilation effect.
6. Vehicle / caravan enclosed space monitoring
Cars, camping caravans, underground garages, monitoring CO2 accumulation in enclosed compartments, preventing drivers and passengers from feeling oxygen deficiency and drowsiness.
7. IoT secondary development module Smart home, portable detection instruments, environmental data recorder manufacturers' development kits; Serial port protocol standardization, quick connection with microcontrollers and cloud platforms.
V. Core Advantages
Ultra-small size: 28mm square, can be encapsulated as Type-C straight-insert mini probe, portable design;
NDIR infrared long lifespan: no electrolyte, no consumables, stable operation for 5 years, no need to frequently replace sensors;
Three-in-one synchronous detection: CO2 + temperature + humidity integrated collection, built-in temperature compensation, more accurate measurement;
Built-in ABC automatic calibration: no need for manual zero-point calibration during long-term use, reducing maintenance costs;
USB 5V wide adaptable power supply: mobile phones, power banks, laptops, adapters can directly supply power;
Two versions of wired / Bluetooth selectable: pure development selects UART basic version, portable civilian selects Bluetooth wireless version.

Specifications: