Mitsubishi Elevator Buttons MTD401 MTD411 MTD441

Mitsubishi Elevator Buttons MTD401 / MTD411 / MTD441 are used in elevator operating panel and call button replacement applications.

This button group is usually requested as a square elevator push button series for COP, LOP, hall call panel, landing call panel, or elevator button panel use. Compared with round button models, this series should be confirmed more carefully by button size, rear structure, mounting style, and panel opening.

In the elevator spare parts market, these products may also be searched as:

• Mitsubishi Elevator Button
• Mitsubishi Elevator Push Button
• Mitsubishi Square Push Button
• Mitsubishi Stainless Steel Button
• Mitsubishi COP Button
• Mitsubishi LOP Button
• Mitsubishi Hall Call Button
• Mitsubishi Landing Call Button
• Elevator Button KA101

The main model references for this page are:

• MTD401
• MTD411
• MTD441

Related market references may include:

• DA401
• DA411
• DA441
• KA101

These references are useful for search coverage and quotation confirmation. However, MTD401, MTD411, and MTD441 should not be treated as the same button without checking the old part. The front size, rear connector, lamp structure, symbol, voltage, and installation position may be different.

Square Button Series Application

MTD401 / MTD411 / MTD441 should be understood as elevator push button replacement models, not button expansion boards or display boards.

Depending on the original elevator panel, they may be used as:

• floor number button
• door open button
• door close button
• alarm button
• intercom button
• hall call button
• landing call button
• car operating panel button

This series is often requested when the customer needs an older-style square button replacement. The front appearance is important, but it is not enough for accurate supply. A similar-looking button may have a different rear mounting clip, terminal structure, lamp type, or panel opening requirement.

Model and Structure Confirmation

Before ordering Mitsubishi Elevator Buttons MTD401 / MTD411 / MTD441, please confirm:

• complete model number on the old button
• whether the old part shows MTD401, MTD411, MTD441, DA441, or KA101
• button character or symbol
• front photo of the button
• back photo of the button module
• connector or terminal structure
• button size and panel opening
• illumination color if available
• working voltage if shown on the label
• whether it is used in COP, LOP, HOP, or landing call panel
• complete panel photo showing the installation position

For older elevator panels, the button may already have been replaced before. In that case, the full panel photo is helpful for checking whether the replacement button matches the actual opening and wiring structure.

Practical Replacement Notes

Do not replace this button only by the front style.

Square elevator buttons may look similar from the front, but the rear structure can be different. A button with the correct appearance may still fail to fit if the mounting depth, terminal direction, or panel opening does not match.

If the button does not respond, technicians usually check the button contact, wiring harness, connector terminals, button board, and related signal circuit before confirming the button fault.

If the button light does not work, the cause may come from the LED or lamp circuit, the button module itself, the COP / LOP board, voltage mismatch, or the panel wiring.

For overseas buyers, sending clear photos of the old MTD401 / MTD411 / MTD441 button from both front and back sides is the safest way to confirm the correct replacement before shipment.