DFRobot SEN0659 Industrial RS485 Infrared CO2 Sensor
DFRobot SEN0659 Industrial RS485 Infrared CO2 Sensor is a robust, high‑accuracy monitoring device designed for reliable measurement of carbon dioxide concentrations across a 400ppm to 5000ppm range. Built on advanced non‑dispersive infrared (NDIR) technology, the DFRobot SEN0659 delivers stable and precise readings with ±50ppm accuracy between 400ppm and 2000ppm and ±100ppm above 2000ppm, making the sensor suitable for a wide variety of environmental and industrial applications. The sensor offers a rapid 5s response time, manual calibration capability for enhanced precision, and an intuitive indicator light that provides clear visual feedback on operational status.
Engineered for durability, SEN0659 features an IP65‑rated enclosure with a threaded installation design and a waterproof, breathable membrane that protects internal components from dust and moisture while maintaining proper air exchange. Supporting RS485 communication via the standard Modbus‑RTU protocol, this sensor integrates easily into monitoring systems and pairs seamlessly with modules such as the Gravity RS485‑to‑UART converter for Arduino‑based setups. A rugged design and dependable performance make the DFRobot SEN0659 ideal for indoor air‑quality monitoring, greenhouse CO2 management, pipeline detection, and fresh‑air system control.
Features
- Designed for precise and reliable CO2 concentration monitoring
- NDIR technology, measuring range 400ppm to 5000ppm
- Threaded fixed installation design, easy installation
- Protection grade IP65, longer service life
- RS485 interface, standard Modbus-RTU protocol
- Manual calibration support
- Waterproof membrane on the sensor head
Applications
- Indoor CO2 concentration monitoring
- Pipeline CO2 concentration monitoring
- Greenhouse plant environment monitoring
- Fresh air system environment testing
Specifications
- 12VDC power supply
- <10mA operating current
- RS485 output mode
- 400ppm to 5000ppm measurement range
- Accuracy
- 400ppm to 2000ppm at ±50ppm
- >2000ppm at ±100ppm
- 5s response time
- 60s stabilization time
- -30°C to +80°C operating temperature range
- 5% to 90% operating relative humidity (RH) range
- Plastic casing material
- IP65 protection
- M18 mounting thread diameter
- 75mm x 16.5mm size
- 1m cable length
Connection Diagram
Dimensions
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