NDIR CO2 Sensor Module, 400-500ppm, 400-1000ppm

The high resolution non-dispersive infrared CO₂ sensor provides precise, stable, and long-lasting detection solutions for indoor air quality and environmental monitoring applications. Combining a wide measurement range (400–5000/10000 ppm) with low power consumption, the NDIR sensor supports dual-channel output (UART/PWM) for flexible communication, while its 1ppm resolution ensures high sensitivity.

Feature

• Utilizing advanced non-dispersive infrared (NDIR) detection technology, it ensures precise and stable CO₂ concentration measurements with selectable ranges of 400-5000ppm or 400-10000ppm.
• The CO₂ sensor incorporates a high-sensitivity probe and low-power circuit design, with an average current consumption below 40mA, delivering both energy efficiency and high-response performance.
• The SUCH NDIR CO₂ sensor module supports UART (TTL 3.3V) and PWM output interfaces, enabling rapid integration into smart home appliances, HVAC systems, and automation solutions.

Dimension (unit: mm)

Pin Definition

 

Pin	Description
Pin 1	HD (Calibration, active low for more than 7 seconds)
Pin 2	Reserved
Pin 3	UART (TXD) 0 ~ 3.3V Data Output
Pin 4	UART (RXD) 0 ~ 3.3V Data Input
Pin 5	Reserved
Pin 6	PWM Output
Pin 7	Reserved
Pin 8	GND
Pin 9	Vin Voltage Input