IR CO2 Sensor Module, 400-2000ppm to 400-10000ppm

High-performance infrared carbon dioxide sensor module, offering three selectable ranges: 400–2000ppm, 400–5000ppm, and 400–10000ppm, with 1ppm resolution and ±(50ppm + 5%) accuracy. The NDIR CO₂ sensor features dual UART and PWM output interfaces. This compact module weighs only 5 grams and offers optional pin or terminal type interfaces.

Feature

• The infrared carbon dioxide sensor features 1 ppm resolution and ±(50 ppm + 5%) accuracy, ensuring reliable and stable performance in demanding industrial environments.
• SUCH IR CO₂ sensors offer three measurement ranges: 400–2000 ppm, 400–5000 ppm, and 400–10000 ppm to meet diverse monitoring needs in air quality control, HVAC systems, and environmental monitoring.
• Flexible Signal Output: Supports UART (TTL 3.3V) and PWM output, enabling seamless integration into controllers, PLCs, or IoT systems for real-time data transmission.

Dimension (unit: mm)

Pin-type

Terminal-type

Pin Definition

Pin Type

Pin Name	Pin Description
Vin	Power Supply Positive (Vin)
GND	Power Supply Negative (GND)
PWM	PWM Output
HD	HD (Calibration, active low for more than 7 seconds)
Rx	UART (RXD) TTL Data Input
Tx	UART (TXD) TTL Data Output

Terminal Type

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