Stateless buttons can be used to trigger state changes in HomeKit based on the type of press placed on the button.

The following configuration is available for stateless buttons and doorbells:

Doorbell service works like a stateless button, and it sends a notification when single press type is triggered. All Stateless Button functions will work too.

{
  "c": {
    "io": [ [ [ 0 ], 6 ] ],
    "b": [ [ 0, 5 ] ]
  },
  "a": [{
    "t": 3,
    "f0": [ [ 0, 1 ] ],
    "f1": [ [ 0, 2 ] ],
    "f2": [ [ 0, 3 ] ]
  }]
}

This is an example of a stateless button ("t": 3) connected to GPIO 0 with 3 state inputs defined; single press (1), double press (2) & long press (3)

A stateless button has three actions.

The Digital Outputs "r": [{}] for each should be configured to attain the desired state.

The list of notifications "m" supported by a stateless button are as follows:

See the general Service Notifications section for details of how to configure these notifications.

The Initial Lock State about Service and Physical controls.

State inputs "f[n]" & Status Inputs "g[n]" are supported by this service. The supported list is:

Refer to State Inputs for more detail and examples.