MMTC 2B4X Exterior Two Button Control Station
The MMTC 2B4X is an exterior two-button control station used when an operator needs a separate OPEN and CLOSE command station in a weather-exposed or corrosion-prone location. It is built in a NEMA 4X Rosite enclosure, which makes it a stronger choice than a basic indoor station for washdown areas, coastal environments, parking facilities, industrial yards, and other installations where moisture or corrosion resistance matters.
This station is typically wired into the low-voltage control terminals of a compatible commercial door or automatic gate operator. The OPEN and CLOSE buttons provide momentary command inputs to the operator control board, so the fit is determined by the operator's wiring diagram, not by brand name alone. It is commonly selected when the original station is damaged, when an exterior command point is being added, or when a standard enclosure does not provide enough environmental protection.
Correct fitment matters because a two-button station does not provide a separate STOP button. It should only be used where the operator design and local installation requirements allow that control arrangement. If the existing station has OPEN-CLOSE-STOP buttons, lockout, protective cover, or special double-pole wiring, compare the original part carefully before replacing it with 2B4X.
Compatible With
This product is commonly used with the following applications when the operator control circuit, wiring terminals, enclosure needs, and site layout match the part being replaced or added:
- Commercial overhead door operators with separate low-voltage OPEN, CLOSE, STOP, and COMMON terminals, when the button functions match.
- Automatic gate operators and access control panels that accept momentary dry-contact command inputs, when the circuit design supports a remote control station.
- Industrial door, rolling door, grille, parking, and service-door control circuits that require a surface-mount field station.
- Replacement applications where the original MMTC control station uses the same button count, enclosure rating, mounting style, contact arrangement, and wiring layout.
- Commonly associated with operator brands that use external three-button stations, including LiftMaster, Linear, Genie, Overhead Door, Manaras, DoorKing, HySecurity, and similar commercial operator platforms, when confirmed by the wiring diagram.
- OPEN-CLOSE control applications that do not require a separate STOP button at the field station.
- Exterior or corrosive environments where a NEMA 4X Rosite surface-mount enclosure is preferred over a standard metal NEMA 4 station.
Because control stations and accessory devices are wired into the operator control circuit, verify the terminal labels, contact type, voltage rating, enclosure rating, and required command functions before ordering.
Features and Specifications
| Manufacturer | MMTC |
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| Product Type | Exterior two button surface mount control station |
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| Part Number | 2B4X |
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| Button Function | OPEN-CLOSE |
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| Enclosure Rating | NEMA 4X |
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| Enclosure Material / Style | Rosite enclosure |
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| Mounting Style | Surface mount |
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| Dimensions | H=4-1/4 in, W=4-1/4 in, D=2-1/2 in |
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| Application | Commercial door and gate operator command station |
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| Notes | Use only where the operator control circuit supports the selected button functions. |
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Also Known As / Related Part Numbers
- MMTC 2B4X
- 2B4X
- MMTC-2B4X
- NEMA 4X two button control station
- Exterior OPEN-CLOSE control station
- Related: 2BX, 2BXT, 2BXL, 3B4X, 3B4XL
Technician Note
Use 2B4X where an exterior two-button OPEN-CLOSE station is appropriate. Do not use it as a direct replacement for a three-button station if a separate STOP command is required by the operator or site layout.
Before Ordering Checklist
- Match the MMTC part number and button function to the existing station or wiring diagram.
- Confirm whether the site needs two-button OPEN-CLOSE or three-button OPEN-CLOSE-STOP control.
- Verify enclosure type: interior NEMA 1, exterior NEMA 4, exterior/corrosion-resistant NEMA 4X, or specialty enclosure.
- Confirm contact requirements, especially normally open command buttons and normally closed stop circuits where applicable.
- Check mounting space, conduit entry, back box, and whether a lockout/keyed function is required.
Professional Advisory
Installation should follow the operator manufacturer's wiring diagram and all applicable safety requirements. Do not bypass stop circuits, monitored safety devices, entrapment protection, or required warning devices. If the operator uses high voltage wiring or the control circuit is not clearly identified, have the work performed by a qualified gate or commercial door technician.
Product Questions and Answers
What is the MMTC 2B4X used for?
It is used as an exterior OPEN-CLOSE push-button control station for compatible commercial door and gate operators with matching low-voltage command terminals.
Is the 2B4X the same as a 3-button station?
No. The 2B4X provides OPEN and CLOSE buttons only. If the operator or code-required layout needs a STOP button, use the correct three-button station instead.
Why choose a NEMA 4X station?
NEMA 4X is commonly selected for outdoor, wet, washdown, or corrosion-prone locations where a standard interior or basic metal station may not be suitable.
Can this be used with any gate opener?
Only when the gate operator has compatible dry-contact command inputs and the installer confirms the wiring diagram, contact type, and required button functions.
Is the enclosure surface mount?
Yes. The 2B4X is a surface-mount control station, so confirm the mounting area and conduit approach before ordering.
