Shelly Presence Gen4 vs SONOFF SenseGuard Presence Core Sensor

The Shelly Presence Gen4 is the stronger sensor on paper: wider coverage, more zones, more people tracked at once, and Wi-Fi, Zigbee, Bluetooth and Matter all in one device. The SONOFF SenseGuard is the simpler, Zigbee-only option with a magnetic base and a rotatable head that make aiming easy, and it doubles as a Zigbee router. Owners of the SONOFF report the classic mmWave weakness: lights dropping out while someone is still in the room, and fiddly Home Assistant setup. Buy the Shelly if you want the most capable presence sensor and can power it by USB-C; buy the SONOFF if you already run a Zigbee network and want flexible mounting.

• Choose the Shelly Presence Gen4 if you want the widest coverage, the most zones and multi-protocol connectivity including Matter and Wi-Fi.
• Choose the SONOFF SenseGuard if you run a Zigbee gateway and want a small, aimable sensor that also extends your Zigbee mesh.