HomeKit

You can use AutoWake with Apple HomeKit to automatically run scenes on key events. 

To activate HomeKit support, use the HomeKit switch on the Watch app. This will also let you turn HomeKit on or off at any time. 

You then use the Home app on your iPhone to create up to four scenes that are run on key events. Each of these have a standard name. Namely, "AutoWake On", "AutoWake Off", "AutoWake Snooze" and "AutoWake Stop". You only need to create the scenes that you want to use.  

Here's how to create scenes in the Home app.

AutoWake On

This scene is run when you turn on the alarm at night. For example, you can use this turn off your bedside light. 

AutoWake Off

The scene is run when you cancel the alarm using the main switch. You may want to use this turn the bedside light back on with a dim setting. 

AutoWake Snooze

When the alarm sounds in the morning and you choose the optional Snooze button in the Watch app, the "AutoWake Snooze" scene will be run.  This is a nice way to turn on a light to cure you of your snoozing ways.

AutoWake Stop

When the alarm sounds in the morning and you press the Stop button in the Watch app, the "AutoWake Stop" scene will be run.  For example, you may want to turn on your bedside light to full brightness and start your coffee machine.