This is a 4-pole, Single-Pole Single-Throw (SPST) selector switch with Normally Open (N.O.) and Normally Closed (N.C.) contacts. It features a 90-degree rotary knob for easy operation, supports a current of 5A at 250VAC and 125VDC, and is suitable for quick connect or solder connections. The switch is rated for 250,000 cycles and designed for panel mounting.