Shelly BLU Wall Switch 4 custom buttons

In order to distinguish the Shelly BLU Wall Switch 4 buttons, I created a model on the bottom of which (the button area) you can insert any symbol as a negative volume. I used my own symbols with a height of 0.5 mm. I made the switch handles a bit more massive, even though it is a weak point. Mounting by clicking is seamless, but removing the button may not hold the handles anymore... I inserted the hole in the handle, symbols and dividing line of the button additionally in PS, so you can customize them your way. The button fits the wireless version of the controller with two flaps for four buttons. I printed with nozzle 0.25 / 0.07 ultradetail / 100% fill, PETG.