Before installing a DPST switch, it is important to verify that both switching poles operate correctly. A continuity test helps identify damaged contacts, faulty connections, and possible switching problems before connecting electrical equipment. Using a digital multimeter, I can check whether both poles remain open when the switch is OFF and establish continuity when it is ON. Proper checking continuity across both poles before connecting the load helps improve installation reliability and prevent unexpected electrical issues. Always disconnect the power supply, follow the manufacturer's wiring diagram, and observe appropriate electrical safety precautions during testing.