Human presence sensor 24GHz mmWave Radar Sensor for Home Assistant

Human presence sensor 24GHz mmWave Radar Sensor for Home Assistant, for ESP32, for ESP8266, for Arduino, for Raspberry Pi

HMMD-mmWave-Sensor is an advanced micro-motion detection module based on the AIoT mmWave Sensor SoC S3KM1110 with efficient 24GHz 1T1R antennas. Thanks to the built-in microcontroller and advanced algorithms, the sensor precisely detects motion, micro-motions, and stationary people.

The module communicates via the UART interface and GPIO pins. This allows easy configuration of detection range, sensitivity, and reporting delay. The product is fully compatible with popular platforms such as Raspberry Pi, RP2040, Arduino, ESP32, ESP8266, and Jetson Nano.

Key technical features

The sensor offers a wide detection range, enabling mounting on both ceiling and wall. It provides high accuracy and reliability in building automation systems.

• Frequency band: 24 - 24.25 GHz
• Maximum scanning bandwidth: 0.25 GHz
• Supply voltage: 3.3 V (range 3.0 - 3.6 V)
• Dimensions: 20 x 20 mm
• Detection range (wall mount): motion 10 m, micro-motions 6 m
• Detection range (ceiling mount): motion 5 m, micro-motions 4 m
• Detection accuracy: 0.15 m (for moving targets at 10 m)
• Average operating current: 50 mA
• Data refresh period: 100 ms

Benefits

• High precision in detecting even the smallest movements and stationary people
• Easy integration with Smart Home systems, including Home Assistant
• Simple parameter configuration via the UART interface
• Compact dimensions for discreet mounting
• Versatile applications thanks to support for multiple microcontroller platforms

Example applications

• Smart lighting that responds to presence in a room
• Alarm systems and security monitoring
• Building automation and energy management in Home Assistant
• DIY projects using Raspberry Pi, Arduino, or ESP32
• Contactless interfaces and device wake-up systems