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DFRobot Fermion: C4002 mmWave Human Presence Sensor - Static & Motion Detection for Home Assistant (10m)
The DFRobot Fermion: C4002 mmWave Human Presence Sensor - Static & Motion Detection for Home Assistant (10m) by DFRobot is a mid-range motion sensor designed for everyday users. It features Shipping Weight: 0.006 kg and Shipping Dimensions: 6 × 6 × 2 cm.
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About This Product
The DFRobot Fermion: C4002 mmWave Human Presence Sensor - Static & Motion Detection for Home Assistant (10m) by DFRobot is a mid-range motion sensor designed for everyday users. It delivers reliable performance at an accessible price.
Key Specifications
- Shipping Weight: 0.006 kg
- Shipping Dimensions: 6 × 6 × 2 cm
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The DFRobot Fermion C4002 is a 24GHz mmWave human presence radar sensor designed for advanced smart automation systems. Unlike traditional PIR sensors that detect only motion, this module delivers true presence detection by sensing micro-movements such as breathing and subtle body shifts. It can reliably detect people who are sitting, sleeping, or completely still, making it ideal for Home Assistant, ESP32, Arduino, and Raspberry Pi-based IoT projects.
With a wide 10×10m detection range and intelligent environmental filtering, it ensures accurate occupancy detection while minimizing false triggers from pets, fans, curtains, or ambient movement.
Features:
- True human presence detection using 24GHz FMCW radar
- Detects static, moving, and micro-moving human targets
- Compatible with Home Assistant via ESPHome integration
- UART interface for easy ESP32/Arduino/Raspberry Pi connection
- Configurable detection range for room-level precision control
- Adaptive filtering reduces false triggers from environmental noise
- Supports smart lighting, HVAC automation, and security systems
Specifications:
- Product Type: mmWave Human Presence Sensor
- Model: DFRobot Fermion C4002
- Detection Technology: 24GHz FMCW Radar
- Presence Detection: Motion + Static + Micro-motion
- Communication Interface: UART / GPIO
- Integration Support: ESPHome, Home Assistant, Arduino, ESP32, Raspberry Pi
- Detection Range: Up to 10–11 meters
- Detection Angle: 120° × 120°
- Power Supply: 3.6V – 5.5V DC
- Installation Type: Embedded / DIY Electronics Module
- Application: Smart Home Automation, Security, HVAC Control
- Environmental Resistance: Adaptive filtering for false trigger reduction
- Form Factor: Compact IoT sensor module
- Diamentions : 22mm × 26mm
- Weight : 1g
Package Includes:
1 x DFRobot Fermion: C4002 mmWave Human Presence Sensor - Static & Motion Detection for Home Assistant (10m)
1 x Header Pin
