LiftMaster 02-403 Three-Button Open / Close / Stop Control Station

The LiftMaster 02-403 is a wired three-button station with separate Open, Close and Stop commands for compatible commercial door operators. The manufacturer identifies it separately from 02-403-N4XALD and keyed station versions, so the full suffix and supplied enclosure matter when choosing a control for the site. Confirm the actual enclosure marking, control-circuit requirements and approved installation environment before ordering. This station provides operating commands; it does not include entrapment-protection devices or make a door suitable for momentary or unattended closing by itself.

Compatibility — Models, Versions and Exclusions

Check the Actual Enclosure and Required Control Behavior

The three buttons provide distinct commands, but the operator determines how those commands are used. Check whether the application requires constant-pressure closing, monitored protection or another operating arrangement. Do not change wiring to obtain a more convenient close function when the necessary safety equipment or approved configuration is missing.

Mounting and cable entry are part of preserving the enclosure’s intended protection. Select suitable fittings and a location where the user can observe the opening without standing in its path. Consider access for maintenance and the risk of physical damage from vehicles or equipment. An enclosure rating does not compensate for an open conduit entry, damaged seal or poorly supported cable.

Specifications and Product Identification

Before Ordering

• Record the full operator and approved station interface.
• Confirm the exact 02-403 supplied enclosure marking.
• Review location, cable entry and exposure requirements.
• Verify closing mode and all required protection devices.

Package Contents and Separate Requirements

This listing identifies the three-button station. Confirm the current package and mounting components before ordering. Field wiring, conduit, fittings, an operator and photo eyes or sensing edges are separate requirements. A keyed lockout, wireless transmitter or LCD diagnostic display is not promised in this offer; select those functions through their own documented accessories if needed.

Safety Warnings — Read Before Installation or Service

• WARNING: Improperly located or wired controls can expose people to a moving door. Installation requires a trained commercial door technician.
• Disconnect applicable power before wiring and use only the control circuit specified by the operator manufacturer. Do not assume the station switches motor supply power directly.
• Preserve the enclosure seals and use appropriate cable-entry fittings. Do not treat the enclosure classification as approval for explosive atmospheres.
• Test Open, Close and Stop operation and all required protection devices. Never bypass monitored protection to obtain momentary closing.

Related Products and Important Differences

• DCWALLCTL MAXUM LCD wall controller — a different control interface with a display; compare the exact operator requirements.
• 3BXT exterior three-button station — a separately specified enclosure and control option; verify electrical and environmental suitability rather than assuming equivalence.
• CPS-U commercial photo eyes — a separate monitored protection option where approved for the operator and environment.

Frequently Asked Questions

Is 02-403 the same as 02-403-N4XALD?

They are separate references; confirm the actual enclosure and application before substitution.

Does W/PCK mean a key lockout is included?

No key function is established by that source abbreviation; confirm package contents separately.

Can it switch the motor supply directly?

Use only the operator’s specified control circuit; do not infer motor-switching capability.

Will one press always close the door fully?

The operator mode and required safety equipment determine closing behavior.

Need Help Confirming the Right Product?

Contact Garage-DoorParts.com before ordering. Send the full equipment model, readable part labels and photographs of the installed assembly. Include the dimensions, electrical configuration or accessory details relevant to your project so the listing can be checked against the actual installation.