Product Overview
The HL-951R1-SQ is the 1-channel receiver side of SECO-LARM ENFORCER HL-Series long-range RF access control. In practical use, this receiver listens for compatible 917 MHz HL-Series transmitters and provides a relay output that can be programmed for different control styles, such as timed pulse, toggle, latch, or follow operation. It is used for applications like gate open commands, door release commands, equipment control, and other dry-contact style low-voltage control points. The important fitment detail is that this receiver is not a universal remote receiver for every 315 MHz, 318 MHz, 390 MHz, or rolling-code gate remote. It must be paired with the matching SECO-LARM HL 917 MHz transmitter family and connected to the correct control terminals for the equipment being triggered.
Compatible With
- SECO-LARM HL-Series 917 MHz transmitters when programmed to this receiver
- HL-951T1-SQ 1-button transmitter
- HL-951T2-SQ 2-button transmitter where one or more buttons are programmed to the receiver
- HL-951T1-SWQ wired long-range transmitter when supported by the installation
- Low-voltage gate operator open, step, radio, or external control input when wired through the correct relay terminals
- Electric strike, maglock control relay, door release, lighting, or equipment trigger circuits within the receiver output rating
- Not compatible with unrelated 315 MHz, 318 MHz, 390 MHz, or brand-specific rolling-code transmitters
Features and Specifications
| Manufacturer | SECO-LARM |
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| Product Type | Long-range RF receiver |
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| Part Number | HL-951R1-SQ |
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| Application | Wireless relay activation for access control, gate, door, and equipment inputs |
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| Frequency | 917 MHz HL-Series |
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| Channels | 1 channel |
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| Operating Range | Up to 1,800 ft line of sight when site conditions allow |
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| Input Power | 10-24 VAC or 9-48 VDC |
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| Output Modes | Timed pulse, minute pulse, toggle, latch, and follow |
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| Stored Codes | Up to 99 button codes per channel |
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| Notes | Use with compatible SECO-LARM HL-Series transmitters only |
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Also Known As / Related Part Numbers
- HL-951R1-SQ
- HL951R1SQ
- HL-951R1
- ENFORCER HL-Series 900MHz receiver
- SECO-LARM 917 MHz 1-channel receiver
- Related: HL-951R2-SQ 2-channel receiver
- Related: HL-951T1-SQ transmitter
- Related: HL-951T2-SQ transmitter
- Related: HL-951T1-SWQ wired transmitter
Technician Note
Match this receiver to the transmitter frequency and button style already being used on the job. Range depends heavily on mounting location, metal obstructions, electrical noise, antenna orientation, and whether the transmitter is used from inside a vehicle or behind masonry or metal gates.
Before Ordering Checklist
- Confirm the site uses SECO-LARM HL-Series 917 MHz transmitters.
- Confirm whether a 1-channel or 2-channel receiver is required.
- Verify available input power before wiring.
- Check the equipment control input and relay rating.
- Do not use this as a substitute for required monitored safety devices.
Professional Advisory
Access-control wiring should be handled by a qualified gate, door, or low-voltage technician when the receiver is controlling powered locks, powered doors, or gate operators. Never wire a receiver in a way that bypasses required safety inputs or entrapment protection.
Product Questions and Answers
Will this receiver work with standard garage door remotes?
No. This receiver is for compatible SECO-LARM HL-Series 917 MHz transmitters and should not be treated as a universal garage door receiver.
How many transmitters can be programmed?
The receiver supports up to 99 button codes per channel, depending on the transmitter and programming setup.
Can it be used on a gate operator?
Yes, when the gate operator has a compatible low-voltage control input and the receiver output is wired correctly by a qualified installer.
What is the practical range?
SECO-LARM lists up to 1,800 ft line of sight, but real-world range depends on mounting, interference, metal obstructions, and site layout.
Is this a safety device?
No. It is a wireless control receiver and does not replace monitored photo eyes, safety edges, or other required gate safety devices.
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