SES RHRFSP20, SELECT PASS STAND ALONE RCVR
The SES RHRFSP20 is the stand-alone relay-output receiver in the Select Pass radio family. It listens for compatible 433.920 MHz, 54-bit rolling-code Select Pass transmitters and, when a learned transmitter is received, operates an internal Form C relay. That makes it useful for gate operators, doors, barriers, or access-control inputs that need a dry-contact trigger instead of a Wiegand data output.
This is the receiver to consider when the site does not need the radio code passed into an access-control panel as a card number. For Wiegand-based systems, SES offers the RHRFSPWV3 style receiver. For stand-alone open/close or relay activation, the RHRFSP20 is commonly used because it learns transmitters directly and switches the local relay output.
Compatibility depends on radio format, not just frequency. It must be paired with compatible Select Pass / Multi-Pass 433 MHz rolling-code transmitters. Other 433 MHz products may not work if the coding format is different.
Compatible With
- SES Select Pass 433.920 MHz rolling-code transmitters
- SES Multi-Pass compatible 433 MHz transmitter family where supported
- RTSP1D, RTSP2D, RTSPX1, RTSPX2, RTSPX4, RTSPS1, and RTSPS2 related Select Pass transmitter references where the system supports them
- Gate operators with a compatible open, free-exit, radio, or dry-contact input
- Door operators, barrier operators, and access-control inputs that accept a Form C relay contact
- Small community, commercial, apartment, or private access points needing stand-alone transmitter control
- Not compatible with RHRFSPWV3 Wiegand output wiring as a direct replacement
- Not compatible with HID, AWID, Linear MegaCode, Multi-Code, LiftMaster, Genie, or fixed-code transmitters unless a separate compatible receiver is installed
Features and Specifications
| Manufacturer | Select Engineered Systems |
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| Product Type | Stand-alone RF receiver |
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| Part Number | RHRFSP20 / SES-RHRFSP20 |
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| Radio Frequency | 433.920 MHz |
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| Code Type | 54-bit rolling code Select Pass family |
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| Output | Internal Form C relay |
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| Power | 12/24 VAC or VDC references are commonly listed |
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| Capacity | Commonly listed for up to 200 transmitters |
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| Notes | Use with compatible SES Select Pass transmitters only |
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Also Known As / Related Part Numbers
- RHRFSP20
- SES-RHRFSP20
- RHRFSP20M related mini version
- Select Pass stand-alone receiver
- Select Pass relay receiver
- 433.920 MHz receiver
- 54-bit rolling code receiver
- RTSP1D related transmitter
- RTSP2D related transmitter
- RTSPX1 related transmitter
- RTSPX2 related transmitter
- RTSPX4 related transmitter
- RTSPS1 related transmitter
- RTSPS2 related transmitter
- RHRFSPWV3 related Wiegand receiver
- RHRFSPANT433 related external antenna
Technician Note
Use the RHRFSP20 when the system needs a relay contact. Use the RHRFSPWV3 style receiver when the access-control system needs 26-bit Wiegand output from compatible transmitters.
Before Ordering
- Confirm the transmitter family is SES Select Pass / Multi-Pass 433 MHz rolling code.
- Confirm whether the site needs relay output or Wiegand output.
- Check receiver power voltage before wiring.
- Verify relay contact type and gate/operator input requirements.
- Consider external antenna placement if the receiver is inside a metal cabinet or range is poor.
Professional Advisory
Low-voltage receiver wiring should follow the operator or access-control manual. Do not wire a receiver into high-voltage circuits. If the gate operator has unknown inputs or unsafe movement, have a qualified gate technician handle the installation.
Product Questions
What is the RHRFSP20 used for?
It is used to receive compatible SES 433.920 MHz rolling-code transmitter signals and operate a local relay output for a gate, door, or access-control input.
Is this the same as the RHRFSPWV3?
No. RHRFSP20 is the stand-alone relay-output receiver. RHRFSPWV3 is the Wiegand-output receiver for access-control panel integration.
How many transmitters can it store?
Public SES documentation commonly lists the RHRFSP20 as capable of storing up to 200 rolling-code transmitters.
Will any 433 MHz remote work?
No. Frequency alone is not enough. The transmitter must match the SES Select Pass / Multi-Pass rolling-code format.
When should I add an external antenna?
Use an external 433 MHz antenna when the receiver is inside a metal enclosure, the driveway is long, or reliable transmitter range needs improvement.
