Apollo MSR-2

Quick verdict

The Apollo MSR-2 packs an absurd number of sensors into one little board — presence, temperature, humidity, lux, and more. It's an ESPHome tinkerer's dream for room-aware automations. Don't expect a polished consumer experience though; this is built for the HA crowd.

Standout: Dense multi-sensor package for Home Assistant users who want more than simple motion triggers.

Last checked: 2026-03-22

Compatibility snapshot

Why it stands out

• integrates natively with Home Assistant via ESPHome with zero cloud dependency
• rich sensor set beyond simple presence — includes temperature, humidity, light, and mmWave
• all data stays on your local network with no vendor account required

Reasons to hesitate

• still more enthusiast-oriented than mainstream smart-home sensors
• mmWave sensitivity requires careful mounting height and angle tuning to avoid false triggers
• not a good pick if you do not want Home Assistant-style tinkering

Best for

• advanced Home Assistant users who want richer room telemetry
• buyers who want local presence plus extra environmental sensing

Avoid if

• you want the simplest possible occupancy sensor
• you mostly care about Apple Home, Google Home, or Alexa app polish

Privacy and local-control notes

A strong privacy and local-control option because core value comes from local ESPHome integration, not account-tied cloud services.

Home Assistant support: supported · integration path: ESPHome / native Home Assistant.

Buying reality check

Price notes: Good value for buyers who will actually use the extra sensing data; overkill if you only want basic room occupancy.

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