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.

Notes last checked May 23, 2026.

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 (native ld2410 component over UART).

Built with ESPHome - see the ESPHome guide for Home Assistant →

Buying reality check

Price notes: The LD2410 module is cheap -- a US Amazon listing read $11.99 on 2026-08-31 -- and total DIY cost depends on the ESP32 you pair it with.

Compare side by side: see presence sensor comparisons →

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