SEN0609, mmWave - C4001 24GHz Human Presence Detection Sensor (25 Meters, UART)
The C4001 millimeter-wave presence sensor utilizes a 24GHz signal. It features a 100° horizontal detection field, with a presence detection range of 16 meters and a motion/distance detection range of up to 25 meters. Ideal for human presence detection, environmental monitoring, and real-time tracking projects.
Wiki: SEN0609 C4001 mmWave Presence Sensor 25m
Human Detection
The C4001 outperforms traditional infrared or ultrasonic sensors by detecting both static and moving human presence. With strong anti-interference performance, it operates reliably regardless of ambient light, temperature fluctuations, or environmental noise—ideal for detecting seated, sleeping, or moving people.
Distance and Velocity Detection
Using Frequency Modulated Continuous Wave (FMCW) radar, the C4001 can measure distances up to 25 meters and detect motion speeds from 0.1 to 10 m/s. FMCW enables continuous distance monitoring and Doppler-based speed calculation, offering higher resolution and real-time tracking for dynamic environments.
What is a Millimeter-Wave Radar Sensor?
Millimeter-wave radar is a contactless sensing technology operating between 24GHz–300GHz. It enables detection of object distance, speed, and angle using high-frequency electromagnetic waves. Ideal for motion analysis and object presence in complex environments.
Installation Method
Installation orientation affects performance. Recommended mounting options include horizontal, top-mounted, bottom-mounted, or downward-tilted configurations.
Wiring Diagram
- Human presence detection up to 16 meters
- Motion and distance detection up to 25 meters
- Velocity detection from 0.1 to 10 m/s
- High immunity to temperature, light, humidity, dust, and noise
- Supports I/O control via high/low-level output
- UART communication for configuration and output
- Compact form factor, easy integration
- Human presence detection
- Distance and velocity monitoring
- Environmental and climate control systems
- Industrial automation
- Real-time movement tracking
- Operating voltage: 3.3V / 5V
- Maximum detection range: 25 meters
- Beam angle: 100° × 40°
- Modulation mode: FMCW
- Operating frequency: 24GHz
- Operating temperature: -40°C to 85°C
- Baud rate: 9600bps
- Dimensions: 26mm × 30mm
- C4001 mmWave Presence Sensor (25m) × 1
- 5-pin header × 1
