Linked Service

Linked Service is, to put it another way, a Service attached to the Parent Service.

How to create a Linked Service#

To create a Linked Service, you must first create a Parent Service. For this example, the Linked Service will be a Battery and the Parent Service a Motion Sensor.

Next, you must create Linked Service and select Parent Service used.

Characteristic Properties#

Use the following JSON in your Battery Characteristic Properties so that the Home.app displays BatteryLevel and StatusLowBattery.

{
  "BatteryLevel": 100,
  "StatusLowBattery": 0
}

Another way#

Another method is to use Characteristic Properties. As a reminder: Characteristic Properties tell HomeKit that your Accessory will use Characteristic(s) provided.

For example, you want an Accessory that is both Temperature Sensor and Humidity Sensor, nothing could be simpler, just use the following JSON in your Characteristic Properties.

{
  "CurrentTemperature": 20,
  "CurrentRelativeHumidity": 50
}

Edit this page on GitHub