Home Assistant and ESPHome are so powerful, and radar technology is innovative and very intelligent. It’s great to combine them! We share with you this body sensing radar that works great! An open, free, cloud-independent and highly reliable sensor! Bringing a new intelligence to your smart home.

1. Product introduction

Presence Sensor is a high-sensitivity 24GHz human presence status sensing module developed by Hilink Electronics. Its working principle is to use FMCW frequency-modulated continuous wave, to detect human targets in the set space, combined with radar signal processing, accurate human body induction algorithm, to achieve high sensitive human presence status sensing, which can identify the human body in motion and stationary state, and can calculate auxiliary information such as the distance to the target.

This product is mainly used in indoor scenes to sense whether there is a moving or micro-moving human body in the area, and output the detection results in real time. Farthest sensing distance up to 6 meters, distance resolution 0.75m.

The device connects to Home assistant via Bluetooth with automatic detection and setting, and if you need a longer signal range, you can connect it via ESP Home and 2.4Ghz Wifi signal. Yaml code for WiFi option

The sensor uses Type-C power supply, which is very convenient.

2. Product Features

  • Plug and play, easy assembly
  • The longest sensing distance is up to 5 meters
  • Large detection angle, coverage up to ±60 degrees
  • Accurate identification within the interval, support the division of the sensing range, and shield the interference outside the interval
  • Supports various installation methods such as ceiling hanging and wall hanging
  • 24GHz ISM band, compliant with FCC and CE spectrum regulations
  • The ultimate cost-effective choice

3. Benefits

LD2410 human body sensing module adopts 24GHz millimeter wave radar sensor technology. Compared with other solutions, it has obvious advantages in human body sensing applications:

1. In addition to being sensitive to moving human bodies, it can also sensitively sense static, micro-moving, sitting and lying human bodies that cannot be identified by traditional solutions;

2. It has good environmental adaptability, and the sensing effect is not affected by the surrounding environment such as temperature, brightness, humidity and light fluctuations;

3. It has good shell penetration and can be hidden in the shell to work without opening holes on the surface of the product, which improves the aesthetics of the product;

4. It can flexibly configure the farthest sensing distance and the sensitivity on each distance door to achieve flexible and fine personalized configuration.

5. This radar module can be widely used in fields such as human sensing lighting control, advertising screens with human sensing wake-up, life safety protection, intelligent air conditioning, smart home appliances, and intelligent security.