Aqara Presence Sensor FP2 vs Shelly Presence Gen4

Both are mmWave presence sensors that see people sitting still, which PIR sensors cannot. The Aqara FP2 is the more mature pick: up to 30 zones, fall detection when ceiling-mounted, IPX5 for bathrooms, and wide ecosystem support including HomeKit. The Shelly Presence Gen4 is newer, tracks up to 6 people across 10 zones, and adds Wi-Fi 6, Zigbee 3.0 and a built-in light sensor. Owners of the FP2 praise accuracy and Home Assistant integration, but some report a few-second delay and one installation failure. The Shelly is the better fit if you want Matter, Zigbee or light-level automations.

• Choose the Aqara FP2 if you want fall detection, bathroom-safe IPX5 sealing, HomeKit support and the most granular zone setup.
• Choose the Shelly Presence Gen4 if you want Matter, Zigbee 3.0, Wi-Fi 6 and a built-in ambient light sensor in one sensor.