LiftMaster 02-403-N4XALD Outdoor Three-Button Control Station — NEMA 4/4X/12

The LiftMaster 02-403-N4XALD is an outdoor three-button control station for compatible commercial door operators. It provides separate Open, Close and Stop controls, and the MAXUM accessory documentation identifies its enclosure classification as NEMA 4/4X/12. Select it with the operator’s supported control wiring and operating mode in mind. An outdoor enclosure does not make the station suitable for every hazardous environment, and installing a three-button station does not automatically authorize unattended or momentary closing at the door.

Compatibility — Models, Versions and Exclusions

Match the Station to the Door’s Control Circuit

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

• Identify the exact operator and supported three-button wiring arrangement.
• Confirm the operating mode and required monitored protection.
• Choose a suitable mounting location with a clear view of the door.
• Plan enclosure-compatible cable entries, fittings and mounting hardware.

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

Does it include a key lockout?

No keyed lockout is promised in this listing. Choose the separately specified station if that function is required.

Can it replace any residential wall button?

No. Commercial control circuits and residential digital wall controls can use different interfaces.

Does NEMA 4X mean explosion proof?

No. Hazardous-location selection requires its own documented equipment rating.

Will the Close button always operate with one press?

The operator configuration and required safety devices determine closing behavior. Follow the approved system instructions.

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.