Hella Accurate MMwave Human Presence Sensor With 11M Motion And 10M Static Detection Featuring No Sweat ESPHome And Home Assistant Integration For ESP32 And Arduino Smart Home DIY Projects Boosting Occupancy Monitoring And Distance Insights

One C4002 mmwave presence sensor module for home automation
✔️ 10m static tracking, built in light meter, UART connect

This compact unit replaces basic motion detectors with steady radio wave sensing. You mount it inside rooms to track real people rather than sudden jumps. It handles busy hallways and quiet bedrooms alike. These solid circuits plug straight into your main control hub for daily routine tracking.

✅ Detection hits up to 11 meters when you pace through the room
✅ Adaptive filters ignore spinning ceiling fans and swaying drapes
✅ Built in light meter tracks 0 to 50 lux for exact dimming settings
✅ Runs on standard 3.6 to 5.5 volts through a simple UART cable

💡 What drives accurate occupancy logging and reliable smart switch triggers in tight residential wiring setups?

This handy upgrade swaps slow infrared scans for steady radio pulses that catch subtle shifts in posture. You will notice fewer stray alerts when pets hop on furniture or ventilation kicks on during winter.

- Millimeter wave arrays continuously map full room footprints without blind spots near walls
- Standard yaml profiles flash instantly onto esp32 boards for direct network broadcasting
- Tunable signal thresholds filter hallway chatter so your dashboard reflects actual usage only
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