A limit switch typically outputs what kind of signal?

A limit switch typically outputs what kind of signal?

• A. Analog signal
• B. Electrical signal
• C. Digital data
• D. Pulse

Answer: (B)

A limit switch converts a physical touch into an electrical state that a controller can read. Its output is an electrical signal—usually a binary on/off state from the switch contacts. It’s not an analog signal that varies with how far you press it, and it isn’t data in the sense of a digital message or a sequence of pulses by itself. The switch simply closes or opens a circuit, producing a change in electrical condition that a control system can detect. Sometimes people treat this change as a digital logic level, but the fundamental nature of what the switch provides is an electrical signal indicating position.

A limit switch converts a physical touch into an electrical state that a controller can read. Its output is an electrical signal—usually a binary on/off state from the switch contacts. It’s not an analog signal that varies with how far you press it, and it isn’t data in the sense of a digital message or a sequence of pulses by itself. The switch simply closes or opens a circuit, producing a change in electrical condition that a control system can detect. Sometimes people treat this change as a digital logic level, but the fundamental nature of what the switch provides is an electrical signal indicating position.