I am having difficulties with an FP300 acquired in November 2025. Initially, the device continually indicated dead batteries. Assuming that being correct I replaced the batteries 3 or 4 times only to discover that the batteries all showed 5v with a multimeter. After upgrading to the current firmware the batteries now read at 100% for a couple of months. However, the Occupancy Sensor has now gone crazy. I have reset, factory reset, replaced batteries, removed the device from Apple Home as well as the Aqara app. All times of day under all conditions the device fails to sense presence accurately.
Any clues as to what can be done? What is my recourse for this apparently failed device?
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I reset the device, operation via Zigbee and the detection range to 0-3 m. I have put the device in the kitchen freezer and it still shows occupancy with a temperature of 76º F.
Given the battery issues you had from the start and everything you’ve already tried, I’d suspect a faulty unit rather than a setup problem. If it’s still under warranty, I’d contact Aqara support and ask for a replacement.
Temperature doesn’t seem to be a problem. With the device sealed in the freezer why does it still indicate occupancy?
After I upgraded the firmware the device performed as it should for a couple of weeks. After that, the occupancy would flash presence / no presence momentarily holding each parameter.
