LITOS v2 — Compact mmWave Presence Sensor with LD2410B and Seeed C3
LITOS v2 is the upgraded successor to LITOS v1, offering improved Wi-Fi range and stability thanks to an external antenna. It features the proven HLK-LD2410B millimeter-wave radar, which can detect both motion and stationary objects at distances up to 6 meters (20 feet) indoors. This makes LITOS v2 suitable for smart lighting, occupancy monitoring, energy-saving automation, and security applications.
At its core is the compact Seeed XIAO ESP32-C3, providing reliable Wi-Fi performance. The combination of LD2410B and C3 ensures a high-accuracy presence detection system in a very small enclosure.
【Home Assistant Required】
Works exclusively with Home Assistant, an open-source platform for local smart home control and automation. Requires an existing Home Assistant installation. Basic familiarity is recommended.
【Integrated Ambient Light Sensor】
LITOS v2 includes an integrated VEML7700 light sensor, as many automations rely on both presence and lighting conditions. Its sensitivity closely matches the human eye, allowing accurate ambient light readings — ideal for rules such as turning lights on only when someone is present and the room is dark.
【Refined, Light-Permeable Front Design】
The front panel is made from high-quality 3D-printing filament, allowing ambient light to pass through naturally. This ensures accurate light measurements and adds a subtle, modern aesthetic.
【Ready-to-Use ESPHome Firmware】
LITOS v2 comes pre-flashed with ESPHome, making setup straightforward:
1. Connect to the device’s hotspot.
2. Enter your Wi-Fi credentials.
3. Add the newly discovered device to your Home Assistant or ESPHome system.
No manual flashing or additional configuration is required.
【Key Features】
- Reliable HLK-LD2410B mmWave radar for presence detection
- Detects motion and micro-motion up to 6 m / 20 ft
- Powered by Seeed XIAO ESP32-C3 for stable Wi-Fi performance
- Integrated VEML7700 light sensor for accurate ambient light detection
- Light-permeable front panel for precise measurements
- Pre-configured with ESPHome for fast setup
- Compatible with Home Assistant, ESPHome, and other automation platforms
【Q&A】
Q: Radar sensitivity issues or false detections?
A: Reset the radar sensor and run auto-calibration. See our website for full troubleshooting steps.