Automation
Sensors & Controls replacement guide
Identify sensors, switches, encoders, relays, and control components from exact part numbers and electrical interfaces.
Evidence boundary. Controls are especially sensitive to revision, firmware, pinout, and safety requirements. Pages will favor exact identification and documented successors over generic same-function suggestions.
What to capture01
Exact part number and revisionRecord this before searching for a substitute.
Sensing principle, range, and targetRecord this before searching for a substitute.
Supply voltage, output, and wiringRecord this before searching for a substitute.
Connector, housing, mounting, and dimensionsRecord this before searching for a substitute.
Approvals, environment, and communication protocolRecord this before searching for a substitute.
What must match02
Electrical and signal compatibilityConfirm it against the original equipment, duty, and source documentation.
Mechanical mounting and sensing distanceConfirm it against the original equipment, duty, and source documentation.
Connector and pinoutConfirm it against the original equipment, duty, and source documentation.
Response, accuracy, and switching behaviorConfirm it against the original equipment, duty, and source documentation.
Safety, approvals, and environmental ratingConfirm it against the original equipment, duty, and source documentation.
Common searches03
What replaces this proximity sensor?
How do I identify an encoder?
Can I substitute a sensor with the same connector?
What does this control part number mean?
Authoritative starting points04