Snap-in, PCB mounted 2.1mm DC power socket with SPST black rocker switch. Features: Contact resistance: <20m ohm (initial) Electrical life: 6,000 cycles Button dimensions: 10.1(L) x 6.3(W) x 2.82(D)mm Overall dimensions: 24.5(L) x 9.0(W) x 14.1(D)mm