The D6RLGNF1 LFS with Pushbutton Switches Top actuated Keyswitch illuminated SPST THT 1.30N 12*11.4*12.8 manufactured by C&K is an illuminated SPST (Single-Pole-Single-Throw) keyswitch. It is a momentary actuated switch, meaning that it is only active while being pressed down. The keytop is illuminated, allowing it to be used in low-light environments. The switch is 12mm x 11.4mm x 12.8mm in size. This switch is a THT (Through Hole Technology) device, which means that a soldering iron or soldering gun is used to attach the switch to the circuit board.