Global Shortcuts

Most screens share the keys below. Each App may also have its own shortcuts — see that App’s doc page.

Navigation

Key	Action
Letter keys (main menu)	Open the matching App
ESC / GO (side button)	Return to main menu; if Help is open, close Help first (Keyboard exits with a long-press BtnGO)
h	Open / close Help on any screen (Keyboard: Fn + h)
; , / ↑ / ←	Previous page
. / / ↓ / →	Next page
[ ]	Page some lists / grids (see each App tip / Help)

Screenshots

Key	Action
Fn + s	Save the current screen as PNG

• Prefer TF card; otherwise Flash LittleFS: /shot/<group>_<app>_<feature>.png (e.g. exi2c_gps_live.png; duplicates get _002)
• When space is low, existing shots are not deleted; the device shows no space for shot
• On success the screen flashes once (invert); beep is controlled by Options → Sound → screenshot (sound.screenshot)
• Preview, download, delete one, or clear TF / Flash shots at /shots in Config Web
• Info → Storage: press c to clear all shots (y confirm / n cancel)

Top Bar

The main menu and most Apps show WiFi / BLE status, battery, page dots, and similar info in the top bar. Back always uses ESC / GO — headers no longer draw a return icon.

Sound Feedback

Some actions (e.g. Mijia on/off, Time key presses, screenshots) can enable/disable beeps via Options or Config Web, and adjust speaker volume with sound.volume (0–100).