HiLink LD2450 mmWave Sensor

Quick verdict

The LD2450 steps up from the LD2410 by tracking where people are, not just whether someone is present. If you run ESPHome and want coordinate-based zone automations at module prices, it makes a great weekend project. If you just need reliable stationary presence in a box, buy a finished sensor instead.

Standout: 24GHz radar that tracks up to three targets with X/Y position, feeding zone-based presence into Home Assistant locally through ESPHome.

Last checked: 2026-05-27

Compatibility snapshot

Why it stands out

• Tracks up to three moving targets at once with X/Y coordinates, so you can build zone-based automations from one sensor
• Module-level pricing like the LD2410, but with multi-target position tracking the LD2410 cannot do
• ESPHome ships a native LD2450 component, so there is no custom firmware to hack together

Reasons to hesitate

• DIY build: you supply the ESP32, the wiring, and an enclosure
• Strong at tracking motion position, weaker than the LD2410 at holding still, seated presence
• Zone tuning in ESPHome takes patience to dial in

Best for

• Tinkerers who want multi-target position tracking for room zones without buying a finished product
• People already running ESPHome who want coordinate-based presence on the cheap

Avoid if

• You want a finished sensor with an enclosure and power supply in the box
• You mainly need rock-solid stationary presence, which the LD2410 or a finished mmWave sensor handles better

Privacy and local-control notes

Fully local. The LD2450 module talks over UART to an ESP32 running ESPHome, so tracking data never leaves your network.

Home Assistant support: supported · integration path: ESPHome (LD2450 component).

Built with ESPHome — see our ESPHome guide for Home Assistant →

Buying reality check

Price notes: The bare LD2450 module costs single-digit dollars from electronics sellers; total cost depends on the ESP32 you pair with it.

Compare side by side: see presence sensor comparisons →