ComponentsThe PTS645SK43SMTR92LF from C&K Components is an SMT-mountable microswitch featuring a single-pole, single-throw (SPST-NO) switch with a position of 2 and a detent action. It is rated for 0.05A at 12VDC, and the force required to operate it is 2.6N. It does not feature any additional features such as a built-in resistor or LED.