PRODUCT SELECTION

Gas Detection Sensors

Start with the target gas, concentration range and operating environment.

RS-CO2-001-01 / Model reference

Manufacturer reference: DFRobot SEN0659. Technical information and project integration support.

Parameter	Published reference
Target / principle	CO2 / NDIR · Not CO, combustible gas or a multi-gas detector
Range	400-5000 ppm
Accuracy	+/-50 ppm at 400-2000 ppm; +/-100 ppm above 2000 ppm · Factory test conditions and drift basis to confirm
Supply / current	12 V DC / <10 mA
Interface / protocol	RS485 / Modbus RTU

Selection item	What your project needs
Target gas	Gas species and expected concentration range
Performance	Sensitivity, response, cross-sensitivity and calibration
Environment	Temperature, humidity, exposure and maintenance interval
Integration	Power, output interface, alarm thresholds and acquisition

Send the measurement requirements for model selection and system integration.

Measurement requirement *Performance targetInterface & powerDeployment scale

Requirement	Confirm for the selected model
Device interface	Sensor output and host / acquisition compatibility
MQTT	Native device output, gateway conversion or custom integration
OTA	Firmware scope, compatible devices and recovery requirements