NICE / APOLLO 636USR, CNTRL BOARD, nonETL, F/SINGLE
The Nice Apollo 636USR control board is a replacement board for select older Apollo non-ETL single gate systems. It controls the gate operator logic, accessory inputs, receiver connections, timing, and sensitivity adjustments in compatible installations. The important detail is the suffix: 636USR should not be treated the same as 636US when a dual gate is involved. Many older Apollo gate systems have been repaired or modified over the years, so board replacement should be based on the installed board label and wiring layout rather than the operator name alone. Because this board is non-ETL, it should be used cautiously and only in appropriate legacy applications with properly functioning safety equipment.
Compatible With
Commonly associated with the following applications when confirmed by the Apollo/Nice parts diagram and the installed operator configuration:
- Select older Apollo single swing gate operator systems
- Apollo non-ETL single gate control-box applications
- Older Apollo 1500 / 1600 style single gate systems when board suffix and wiring match
- Installations requiring the 636USR single-gate board reference
- Legacy Apollo systems where the parts diagram specifies 636USR
Features and Specifications
| Manufacturer | Nice Apollo |
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| Product Type | Control board |
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| Part Number | 636USR |
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| Application | Older Apollo non-ETL single gate systems |
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| Gate Configuration | Single gate only |
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| Safety Listing | Non-ETL |
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| Notes | Do not use as a dual-gate substitute for 636US |
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Also Known As / Related Part Numbers
- 636USR
- Apollo 636USR
- Nice Apollo 636USR
- 636USR control board
- Control board non-ETL for single
- Related but different: 636US single or dual board
- Related older board family: 633, 634, 635, 636
Technician Note
The single-only board distinction matters. Using the wrong 636 board version can create control problems or leave a dual gate system improperly supported.
Before Ordering
- Confirm the system is single gate only
- Match the installed board suffix exactly
- Compare wiring terminals and receiver connections
- Verify actuator and limit setup
- Inspect safety devices and do not bypass them
Professional Advisory
Disconnect all power and battery sources before board replacement. Use a qualified gate technician for troubleshooting, line-voltage wiring, or unsafe gate movement.
Product Questions and Answers
How is 636USR different from 636US?
The 636USR is commonly described as a non-ETL control board for single gate applications only. The 636US is listed for single or dual applications.
Can 636USR run a dual gate system?
No. The 636USR should be treated as single-only unless current manufacturer documentation says otherwise.
What operators is 636USR commonly associated with?
It is commonly associated with select older Apollo non-ETL single swing gate operator systems, including older 1500/1600 style references when the installed board and wiring match.
Is this a current UL325 board?
No. The 636USR is a non-ETL board and should not be used to bypass modern safety-device requirements.
What should be compared before ordering?
Compare the installed board label, suffix, terminal layout, receiver wiring, actuator type, limit setup, and whether the system is single or dual gate.
