HiLink LD2410 mmWave Sensor

Quick verdict

The HiLink LD2410 is the cheap-and-cheerful path to true mmWave presence in Home Assistant. You're paying in DIY time instead of dollars. If you already run ESPHome you'll love it; if you don't, the Everything Presence One or Aqara FP1E will save you a weekend.

Standout: Bare mmWave module that turns any ESP32 into a true presence sensor — at module prices, not finished-product prices.

Last checked: 2026-05-23

Compatibility snapshot

Why it stands out

• True mmWave presence detection at hobbyist prices — detects stationary occupancy that PIR cannot
• Pairs naturally with an ESP32 + ESPHome for a fully local Home Assistant sensor
• LD2412 successor adds multi-zone gating and finer sensitivity

Reasons to hesitate

• DIY build required — you need an ESP32, soldering / dupont wiring, and ESPHome experience
• No enclosure included — placement and cabling are your problem
• Per-room calibration takes real time to dial in

Best for

• Home Assistant tinkerers who want true mmWave presence at module pricing
• Multi-room rollouts where the per-device cost of an Aqara FP1E or Everything Presence One adds up

Avoid if

• You want a plug-and-play sensor with an enclosure and a power adapter
• You don't run ESPHome and don't want to start

Privacy and local-control notes

Pure local — the LD2410 module communicates via UART to an ESP32 running ESPHome. Zero cloud touch by design.

Home Assistant support: supported · integration path: ESPHome (LD2410 custom component).

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

Buying reality check

Price notes: The LD2410 module itself is single-digit dollars; total DIY cost depends on the ESP32 you pair it with.

Compare side by side: see presence sensor comparisons →