NICE / APOLLO 636US, CONTROL BOARD, NON-ETL, FOR SINGLE OR DUAL APPLICATIONS - WITH LIMIT BYPASS PLUG
The Nice Apollo 636US control board is a replacement control board for select older Apollo non-ETL gate operator systems. The board handles operator inputs, accessory connections, auto-close timing, reverse sensitivity, and gate-control logic in compatible Apollo systems. Many older Apollo operators used 633, 634, 635, and 636 board variations over time, so the suffix and system layout matter. The 636US version is commonly listed for single or dual gate applications and includes a limit bypass plug. Because it is a non-ETL board, it should be used only where appropriate for the existing system and should not be promoted as a current monitored-safety upgrade. Any gate with unsafe movement, missing photo eyes, or outdated wiring should be reviewed by a qualified technician.
Compatible With
Commonly associated with the following applications when confirmed by the Apollo/Nice parts diagram and the installed operator configuration:
- Select older Apollo 1500 swing gate operator systems
- Select older Apollo 1600 swing gate operator systems
- Apollo non-ETL single gate applications where 636US is specified
- Apollo non-ETL dual gate applications where 636US is specified
- Older Apollo 633 / 634 / 635 / 636 board replacement references when wiring and system configuration match
- Systems requiring the included limit bypass plug reference
Features and Specifications
| Manufacturer | Nice Apollo |
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| Product Type | Control board |
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| Part Number | 636US |
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| Application | Older Apollo non-ETL control box systems |
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| Gate Configuration | Single or dual applications where supported |
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| Safety Listing | Non-ETL |
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| Included / Related Component | Limit bypass plug, commonly referenced as 71050014 |
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| Notes | Verify board number, suffix, terminals, limits, and actuator configuration |
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Also Known As / Related Part Numbers
- 636US
- Apollo 636US
- Nice Apollo 636US
- 636 control board US version
- Apollo 636 board with limit bypass plug
- Related older boards: 633, 634, 635, 636
- Related but different: 636USR single-only board
- Related part reference: 71050014 limit bypass plug
Technician Note
Control board replacement can expose existing wiring or safety issues. Do not bypass safety devices. A qualified gate technician should inspect outdated or non-ETL systems before returning the gate to service.
Before Ordering
- Match the exact board number and suffix
- Confirm single vs dual gate configuration
- Compare terminal layout and accessory wiring
- Check actuator and limit setup
- Review safety-device requirements and current site condition before powering the system
Professional Advisory
Disconnect power and battery before replacing a control board. Do not work on energized gate controls, and do not bypass monitored or required safety devices.
Product Questions and Answers
What older boards does the 636US commonly replace?
The 636US is commonly referenced as replacing older Apollo 633, 634, 635, and earlier 636 board versions, including Apollo 634 control board references.
Is the 636US for single or dual gates?
The 636US is listed for single or dual non-ETL Apollo applications and includes a limit bypass plug.
What is the limit bypass plug?
The limit bypass plug is commonly referenced as part number 71050014 and is included/pre-installed on some 636US board listings.
Is the 636US UL325/ETL listed?
No. This is a non-ETL board. It should not be used to avoid current safety requirements or monitored safety-device obligations.
Which Apollo operators commonly use 636 style boards?
636 style boards are commonly associated with older Apollo 1500 and 1600 non-ETL swing gate operator systems, with exact compatibility depending on actuator, limits, and control-box wiring.
