The SwitchBot mmWave Presence Sensor is a battery mmWave + PIR node that holds still presence by reading chest movement. Hub-free local linkage covers SwitchBot Bot, Relay, and Light, with up to two automations.

SwitchBot’s US page showed 120° detection, up to 8 m moving and 5 m stationary, two AAA cells rated up to two years, and IP55. More than two local links need a SwitchBot hub. Apple Home is listed only via a SwitchBot Matter Hub, plus Home Assistant, Alexa, and Google Home.

Pros
– A battery mmWave + PIR node that holds still presence by reading subtle chest movement, so lights do not drop while someone sits still
– Hub-free local linkage covers SwitchBot Bot, Relay, and Light, with up to two automations

Cons
– More than two local links require a SwitchBot hub
– Apple Home is listed only via a SwitchBot Matter Hub

SwitchBot mmWave Presence Sensor

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Where to buy (prices as of 2026-08-24)

Only these listings were found.