Special Functions

The back of your TRMNL device has an on/off switch, USB-C input, and multi functional "boot" button.

The boot button does 3 things by default:

But you can program a 4th function, attached to a "double-click" of this button, with any of the following behaviors.

Visit your Device settings page and scroll down to the Special Function dropdown.

There are several options, which we'll explain below.

Triggers a simple identification screen to help you determine which device is which.

This is helpful for customers with multiple devices who may not give them descriptive names, or who have their devices in the same room with a similar case color.

Puts your device to sleep for 8 hours. In the future you may be able to customize this sleep period length.

Instructs your device's firmware to activate the "TRMNL" WiFi portal so that you can connect to a new network, without resetting your existing credentials.

This works even on captive-portal / WPA-Enterprise networks. See details here.

Begins showing content from your Playlist at the top/first position. Think of this as an enhancement to the single-click "skip" feature, as it skips multiple screens all at once.

Goes back to the previously viewed screen. Helpful if you noticed something interesting just as your TRMNL device began showing new content.

Sends yourself an email with the latest (current) device screen content. Helpful if you want to save/bookmark something for later but don't want to search for it in your Playlist history.

Switches your screen to any item of your choice. Helpful if strangers are nearby and you'd rather show the weather (for example) than a personal calendar.

This interface will appear once you set the Special Function dropdown to Guest Mode. Set an item from your playlist as well as a duration to ensure sensitive information does not re-appear until guests are gone.