Aqara has announced its first battery-powered presence sensor, which can be installed nearly anywhere in your home to automate smart devices as your family comes and goes. Instead of having to hide a cord and plan its location around a power source, a pair of CR2450 coin cell batteries powers the Presence Multi-Sensor FP300 for up to three years when using it with a Zigbee smart home setup, or up to two years if you’ve upgraded to Thread. It’s available now through Amazon or Aqara’s website for $49.99.

The FP300 uses a combination of passive infrared (PIR) and 60 GHz mmWave radar sensors to detect moving or stationary people up to 20 feet away so you can set up automations that turn on lights when someone enters a room, or turns off various smart home devices after a room has been empty f

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