presence sensor

Apollo MSR-2

mid local: excellent Wi-FiESPHomeBluetooth

Price: $20.99 verified Aug 30, 2026
HA fit: excellent
Works offline: yes
Setup: moderate
Hub needed: no

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Apollo MSR-2 multisensor with mmWave presence sensing

Quick verdict

The Apollo MSR-2 packs an absurd number of sensors into one little board - presence, temperature, pressure, 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.

Notes last checked May 31, 2026.

Compatibility snapshot

Home Assistant excellent

Apple Home none

Google Home none

Alexa none

Works offline yes

Setup moderate

Extra hub needed no

Power USB-C powered sensor

Local control facts

Home Assistant: esphome integration, Local Push, Platinum on the quality scale (home-assistant.io, checked Sep 10, 2026)

Why it stands out

integrates natively with Home Assistant via ESPHome with zero cloud dependency
rich sensor set beyond simple presence - includes temperature, pressure, 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.

Built with ESPHome - see the ESPHome guide for Home Assistant →

Buying reality check

Price notes: Apollo Automation sells the MSR-2 direct at $37.99 (vendor store, in stock, verified 2026-09-02). Quote that figure as the price. The Amazon listing read $20.99 on 2026-08-30 and had NO buy box at all on 2026-09-02, so preferDirect is set and the maker's store is the primary buy surface. Good value for buyers who will actually use the extra sensing data; overkill if you only want basic room occupancy.

One verified price read so far: $20.99 at amazon on Aug 30, 2026.

Compare side by side: see presence sensor comparisons →

Verified against

The compatibility notes above have not been through the source audit yet. The manufacturer's page is here; the notes were last checked May 31, 2026.

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