The Self-latching lumar button is a block added by RedLogic. It glows in 16 different colors. Compared to the Lumar buttons and the Latchable lumar buttons, the Self-latching lumar button emits a continuous redstone signal if it is not pressed. If it is pressed, the redstone signal is terminated and the button is locked. The button can be unlocked by a secondary redstone signal for example a Lever or Button on the same block (shown in Fig. 1).
The button's modes can be switched between by shift right-clicking on it with a Screwdriver:
Default: The light turns off when the button is pressed.
Inverted: The light turns on when the button is pressed.