Apollo Automation MSR-2 vs SONOFF SenseGuard Presence Core Sensor

Buy the Apollo MSR-2 if you run Home Assistant and want one sensor that covers presence, light, UV, temperature, pressure and optional CO2. It detects people at longer range, tracks still bodies well, and owners call it reliable and easy to set up. The SONOFF SenseGuard is the simpler Zigbee pick: it mounts almost anywhere with its magnetic base and rotating head, splits the room into seven zones, and doubles as a Zigbee router. Its 3.8 rating reflects real complaints about lights switching off on still people and awkward Home Assistant setup.

• Choose the Apollo MSR-2 if you want one multi-sensor with long radar range, true CO2 and native Home Assistant support.
• Choose the SONOFF SenseGuard if you already run a Zigbee hub and want a cheap-to-own, flexible-mount presence sensor that also extends your mesh.