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OWON FDS315

Fall Detection Sensor. Works with Zigbee2MQTT with no vendor hub or cloud: it pairs with a Zigbee stick and shows up in Home Assistant.

Vendor
OWON
Model
FDS315
Type
Other devices
Power
mains: usually a router that extends the mesh
Firmware updates (OTA)
no

Find it in shops: AliExpress

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What it exposes

FeaturePropertyValuesControl
Statusstatusunoccupied, occupied, sitting, on_the_bed, low_posture, fallingread only
Breathing ratebreathing_ratebreaths/minread only
Location xlocation_xcmread only
Location ylocation_ycmread only
Fall detection settingsfall_detection_settings—settable

MQTT: state and commands

Zigbee2MQTT publishes the device state to zigbee2mqtt/my_device (my_device is the name you give the device). An example message:

{
  "status": "unoccupied",
  "breathing_rate": 0,
  "location_x": 0,
  "location_y": 0,
  "linkquality": 120
}

The device only reports data and takes no commands.

Watch the topics live from the browser: MQTT client.

How to pair it

  1. In Zigbee2MQTT click Permit join.
  2. Put the device in pairing mode: usually a long press of the reset button (5–10 s) until the LED blinks; bulbs: switch the power off and on 5–6 times.
  3. Keep the device close to the coordinator or a router while pairing.
  4. Give it a clear name: MQTT topics and Home Assistant entities are built from it.

Exact procedure and model notes: the device page in the Zigbee2MQTT docs. No coordinator yet: coordinator picker.

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