ThemisReviews
Smart home tech, weighed fairly.
Wi-Fi and Bluetooth mmWave presence sensors, including Home Assistant favorites, ranked.
We pulled the Wi-Fi presence sensors on Amazon and scored them on rating, review volume, and features: zones, local Home Assistant support, and extra sensors.
Prices, ratings, and review counts captured from Amazon on 2026-10-04.
Swipe the table sideways to see every column.
| # | Sensor | Price | Rating | Reviews | Works with | Radar | Power | Also senses | Score |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Aqara FP2 | $67.99 | 3.6 | 2,512 | mmWave | Wired (USB-C) | Multi-zone, multi-person, fall detection, light | 80 | |
| 2 | SwitchBot mmWave Radar Motion Sensor | $25.49 | 3.6 | 427 | mmWave + PIR | Battery, up to 2 years | Light, zones | 73 | |
| 3 | AKAMATIS Presence Sensor v2.2 | $20.99 | 4.4 | 52 | 24 GHz (HLK-LD2410B) | USB-C | External Wi-Fi antenna | 72 | |
| 4 | Akamatis Litos v3 | $24.99 | 4.4 | 36 | 24 GHz (HLK-LD2401) | USB | Light (VEML7700) | 71 | |
| 5 | XIITIA LD2410C radar modules (3-pack) | $18.99 | 4.6 | 51 | 24 GHz | From your board | Up to 5 m, Bluetooth config | 64 |
Works with: hover or tap an icon for the system name. A system is shown when it supports the product directly or through the hub the listing requires. The Akamatis sensors and LD2410C modules run ESPHome and work only with Home Assistant. SwitchBot's sensor is Bluetooth and reaches Wi-Fi through a SwitchBot hub.
Scored out of 100: 45% customer rating, 30% review volume, 25% features.
The most capable presence sensor: zones, up to five people, and fall detection.
A battery presence sensor with zones, for SwitchBot homes.
A ready-made ESPHome presence sensor for Home Assistant, with an external antenna.
Akamatis's newer sensor adds a proper ambient light sensor.
Bare radar modules for building your own ESPHome sensors.
A motion sensor (PIR) sees movement, so lights turn off if you sit still. An mmWave presence sensor detects breathing-level motion, so it knows you're still in the room while you read or work.
Most mmWave sensors need USB or wall power because the radar runs constantly. A few newer battery models combine PIR and mmWave to save power.
Some models, like the Aqara FP2, support zones, so a desk, couch, and bed can trigger different automations.