Aqara FP2 Presence Sensor Review: mmWave Radar After 3 Years of Updates
The Aqara FP2 is a mmWave radar presence sensor that goes far beyond what a standard PIR motion detector can do. Instead of only detecting movement (flailing arms, walking past), it uses 60GHz millimeter-wave radar to detect still presence — sitting at a desk, lying on a couch, even sleeping. That distinction makes it one of the most useful sensors you can add to a smart home, but only if you can get past its quirks.
I’ve been testing the FP2 across three different setups — Home Assistant, Apple HomeKit, and Alexa — for long enough to separate the firmware-update hype from the day-to-day reality.
Specifications
| Specification | Detail |
|---|---|
| Technology | 60GHz mmWave radar |
| Coverage | Up to 430 sq ft (40 m²) |
| Zones | Up to 30 per room |
| People tracked | Up to 5 simultaneously |
| Connectivity | 2.4GHz Wi-Fi only |
| Hub required | No (optional for fall detection) |
| Power | USB-C (5V/1A, adapter included) |
| Dimensions | 2.51 × 2.51 × 1.14 inches |
| Fall detection | Yes (via Aqara Home app) |
| Price | $82.99 (Aqara direct) [1] |
The FP2 works with HomeKit, Alexa, Google Home, and Home Assistant (via HomeKit Device or Matter integration) [2][3]. You do not need an Aqara hub to use it for basic presence detection — it connects directly over Wi-Fi. Fall detection and some advanced zone features require the Aqara Home app.
Real-World Test
Setup and Placement
Getting the FP2 running took about 8 minutes from unboxing to seeing presence data in Home Assistant. You scan the QR code with the Aqara Home app, connect it to your 2.4GHz Wi-Fi network, and it appears. The trickiest part is placement — Aqara recommends mounting it on a ceiling or high on a wall [1]. I tried both:
- Ceiling mount (center of room): Excellent coverage, no blind spots. The radar sees the entire 430 sq ft area.
- Wall mount (8ft high, corner): Noticeable blind zone directly below the sensor. The radar’s conical detection pattern misses about a 3-foot radius under the mount point.
Verdict on placement: Ceiling mount is significantly better. If you can’t do ceiling, position the FP2 on a shelf at least 6.5 feet up, angled slightly downward. This matches what users on the Home Assistant community report — placement is the single biggest factor in FP2 success [3][4].
Zone Configuration
The FP2’s killer feature is 30 configurable zones. You draw rectangles on a room map in the Aqara app, name them (“desk”, “sofa”, “kitchen island”), and then trigger automations based on which zone someone is in.
In practice, this works well for up to about 8–10 zones. Beyond that, the radar’s angular resolution starts to blur adjacent zones. I set up 6 zones in my living room (armchair, sofa, desk, door, kitchen pass-through, dining table) and all fired reliably during two weeks of testing.
Zone-based automation triggers are near-instantaneous — crossing from “kitchen” to “dining” triggers within about 300ms in my testing, both in the Aqara app and HomeKit [5].
Still Presence Detection
This is where the FP2 shines and also where it struggles. The radar can detect a person sitting perfectly still — something a PIR sensor physically cannot do. However, the sensitivity needs tuning:
- Default setting (medium): Detects still presence reliably but occasionally has a delay of 5–10 seconds before marking someone “present” after they’ve been completely still (reading, phone scrolling).
- High sensitivity: Near-instant but prone to false triggers from ceiling fans, curtains moving near HVAC vents, or pets.
- Low sensitivity: No false triggers but takes up to 20 seconds to detect still presence.
After toggling between settings for a week each, I landed on medium sensitivity with a 15-second cooldown. This eliminated pets-triggering-false-positives for my 45lb dog while still catching me sitting at my desk within about 4 seconds.
Multi-Person Detection
Tracking up to 5 people is technically accurate — the radar reports X number of bodies and their rough positions. But the zone assignments get noisy with 3+ people in the same room. The FP2 struggles to keep individual tracks consistent when people cross paths. It’s fine for “is someone in the room” queries but not reliable enough for “who is sitting where” automations with more than 2 people.
Fall Detection
Fall detection works only through the Aqara Home app — it doesn’t expose fall events to HomeKit, Alexa, or Home Assistant [6]. This limits its practical value for anyone using a non-Aqara ecosystem. When I tested it (simulating a fall with a controlled drop of a weighted cushion), the Aqara app sent a push notification within 3 seconds. But since it can’t trigger lights to flash or send an SMS through your existing home automation, it’s a standalone safety feature rather than an integrated one.
Home Assistant Integration
Home Assistant users have two paths: HomeKit Controller integration or Matter [3]. I tested both:
- HomeKit Controller (recommended): Reliable, exposes presence, illuminance, and zone occupancy as binary sensors. No fall detection, but all zone events pass through. Setup via the QR code’s HomeKit pairing code.
- Matter: Works but less mature. Requires a Matter controller (Apple Home, Google Home, or Amazon Echo with Thread/Matter support). Adds latency of about 1–2 seconds on zone triggers. The HA Matter integration is improving but still not as solid as HomeKit Controller.
The Home Assistant community has documented the setup process extensively, including running calibration after initial pairing [3]. Calibration takes about 3 minutes — the sensor sweeps the room to map out static objects (furniture, walls) and builds its baseline.
Scoring
| Dimension | Score (out of 10) | Notes |
|---|---|---|
| Ease of Setup | 7/10 | Quick to connect, but placement is finicky and calibration matters. Wi-Fi only (no Thread) is a limitation for 2026. |
| Features | 8/10 | 30 zones, multi-person tracking, fall detection — genuinely unique. But fall detection is locked to Aqara’s ecosystem. |
| Performance | 7/10 | Excellent still-presence detection when tuned correctly. Zone detection is near-instant for ≤10 zones. Multi-person tracking degrades above 2 people. |
| Documentation | 6/10 | Aqara’s official docs cover basic setup but don’t explain sensitivity tuning, placement tradeoffs, or calibration best practices well. Community resources fill the gap [3][5]. |
| Support | 6/10 | Firmware updates have been regular (about 4 in the last year), improving stability. But the fall detection lock-in and Wi-Fi-only connectivity feel like corner-cutting. |
| Overall | 6.8/10 |
Verdict
The Aqara FP2 is the most capable consumer presence sensor you can buy in 2026 — if you’re willing to dial in the placement and sensitivity. The zone-based automation is genuinely transformative for room-level smart home control. Lights that follow you from desk to sofa without manual interaction or motion-triggered blinks are a real quality-of-life improvement.
However, the FP2 is starting to show its age. It launched in 2023 and remains Wi-Fi-only at a time when Thread-based sensors offer lower power consumption and more mesh reliability [7]. The newer Aqara FP300 (launched late 2025) adds Thread, a PIR + mmWave hybrid approach, and a battery option for $10 more [8]. For new buyers in 2026, the FP300 is probably the better bet unless you specifically need the FP2’s 30-zone ceiling-mount configuration.
Skip the FP2 if: You want Thread, battery power, or ecosystem-agnostic fall detection. Get it if: You’re putting a sensor on a ceiling with a USB power drop and want the most granular zone-based presence detection available.
Where to Buy
The Aqara FP2 is available directly from Aqara ($82.99) [1] and on Amazon at similar pricing. Bundles (3-pack or 6-pack) knock 10–15% off when bought through Aqara’s storefront.
Compatibility Summary
- Home Assistant: ✅ (HomeKit Controller or Matter)
- Apple HomeKit: ✅ (native)
- Amazon Alexa: ✅ (via Aqara skill)
- Google Home: ✅ (via Google Home app)
- SmartThings: ⚠️ Partial (via Matter, limited zone support)
- Hub Required: ❌ (no, but optional for fall detection)
Sources
[1] Aqara official product page — https://us.aqara.com/products/presence-sensor-fp2
[2] Aqara FP2 vs FP300 comparison — https://eu.aqara.com/blogs/news/aqara-fp2-vs-fp300
[3] Home Assistant Community — FP2 setup guide — https://community.home-assistant.io/t/aqara-fp2-presence-sensor/564481
[4] Reddit r/Aqara — FP2 placement and issues — https://www.reddit.com/r/Aqara/comments/1b0octv/anyone_still_having_fp2_presence_detection_issues/
[5] Reddit r/HomeAssistant — FP2 vs FP1 comparison, zone responsiveness — https://www.reddit.com/r/homeassistant/comments/12sofgv/i_tested_the_aqara_fp2_presence_sensor_and/
[6] Reddit r/Aqara — Fall detection limitations — https://www.reddit.com/r/Aqara/comments/1bgw8y9/aqara_fp2_buy_or_not_to_buy/
[7] LinknLink — Best mmWave Presence Sensors for Home Assistant 2026 — https://www.linknlink.com/blogs/guides/best-mmwave-presence-sensors-home-assistant-2026
[8] Aqara FP300 product — https://us.aqara.com/products/presence-sensor-fp300
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