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HomeProductsRF/IF and RFIDRF Receiver, Transmitter, and Transceiver Finished UnitsFOBLOQF-4S1
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FOBLOQF-4S1 - RF Solutions

Manufacturer Part Number
FOBLOQF-4S1
Manufacturer
RF Solutions
Allelco Part Number
98D-FOBLOQF-4S1
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
28,130 pcs available, New & Original
Parts Description
REMOTE CONTROL SYSTEM 1-CH
Package
Box
Data sheet
FOBLOQF-4S1.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 28130
  • Unit Price: $46.125
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $46.125 $46.13
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

FOBLOQF-4S1 Tech Specifications
RF Solutions - FOBLOQF-4S1 technical specifications, attributes, parameters and parts with similar specifications to RF Solutions - FOBLOQF-4S1

Product Attribute Attribute Value
Manufacturer RF Solutions
Voltage - Supply 12 ~ 24VDC
Series KEELOQ®
Sensitivity -
Power - Output -
Package Box
Modulation or Protocol KEELOQ
Product Attribute Attribute Value
Interface -
Function Transmitter, KeeLoq
Frequency 433.92MHz
Features -
Data Rate (Max) -
Base Product Number FOBLOQF
Applications General Purpose

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
ECCN 5A991G
HTSUS 8525.60.2000

Frequently Asked Questions(FAQ)

What are the key design considerations when integrating the FOBLOQF-4S1 into a 12–24VDC industrial control system?
The FOBLOQF-4S1 operates across a wide supply voltage range of 12 to 24VDC, which allows flexibility in industrial environments where power rails may vary. However, designers must ensure stable regulation under transient loads, as voltage spikes above 24V can damage the internal RF circuitry. Additionally, the transmitter’s current draw increases with supply voltage, so thermal management and trace width on PCB layouts should account for worst-case power dissipation at 24VDC, especially in enclosed installations.
How does the KEELOQ rolling code protocol in the FOBLOQF-4S1 enhance security compared to fixed-code transmitters?
The FOBLOQF-4S1 uses the KEELOQ cryptographic hopping code algorithm, which generates a new 64-bit encrypted code with each transmission. This prevents replay attacks by ensuring that previously captured signals cannot be reused. In contrast, fixed-code systems are vulnerable to signal interception and cloning. The FOBLOQF-4S1’s implementation includes a factory-programmed seed and a moving code counter, making it suitable for access control applications where security cannot be compromised by simple signal sniffing.
Can the FOBLOQF-4S1 be used in environments with high RF interference, such as near motor drives or switching power supplies?
While the FOBLOQF-4S1 operates at 433.92MHz—a license-free ISM band with moderate noise susceptibility—its performance in high-interference environments depends on proper shielding and layout practices. The absence of specified sensitivity or output power in the datasheet implies reliance on typical KEELOQ module performance, which generally supports reliable communication up to 100 meters in open space. In electrically noisy settings, adding ferrite beads to the power line and using twisted-pair cabling for antenna connections can mitigate conducted and radiated interference.
What is the expected transmission range of the FOBLOQF-4S1 in real-world outdoor conditions, and how does antenna selection affect it?
Although the datasheet does not specify output power or sensitivity, typical KEELOQ-based 433.92MHz transmitters like the FOBLOQF-4S1 achieve 50–100 meters line-of-sight range with a quarter-wave wire antenna. Using a tuned 50-ohm monopole or helical antenna can extend this range, while mismatched or poorly grounded antennas may reduce it by over 50%. For extended range, external low-noise amplifiers are not recommended due to regulatory constraints on conducted emissions in the 433MHz band.
How does the FOBLOQF-4S1 compare to modern 2.4GHz-based remote control systems in terms of reliability and power efficiency?
The FOBLOQF-4S1 operates in the 433.92MHz band, which offers better wall penetration and lower path loss compared to 2.4GHz systems, making it more reliable in non-line-of-sight scenarios such as garage door openers or warehouse access points. However, 2.4GHz systems typically support higher data rates and more robust modulation schemes like DSSS or FHSS. The FOBLOQF-4S1 trades data bandwidth for propagation advantage and simpler implementation, which is acceptable for single-channel on/off control but limits scalability in complex networked applications.
Is the FOBLOQF-4S1 suitable for battery-powered applications, and what power optimization strategies should be considered?
The FOBLOQF-4S1 is not optimized for low-power operation, as it lacks sleep modes or duty cycling features commonly found in battery-operated RF modules. With a supply range starting at 12VDC, it is better suited for line-powered or vehicle-based systems. If used in intermittent battery applications, external circuitry such as a latching relay or MOSFET switch should be added to completely disconnect power between transmissions, minimizing quiescent drain and extending battery life.
What regulatory certifications apply to the FOBLOQF-4S1, and can it be deployed in commercial products for the European market?
The FOBLOQF-4S1 carries an ECCN of 5A991G and is ROHS3 compliant and REACH unaffected, indicating suitability for commercial distribution in regulated markets. Its operation at 433.92MHz falls within the European short-range device (SRD) band, but final product certification under RED (Radio Equipment Directive) is required. The module itself may not be pre-certified for standalone use, so system-level testing for spurious emissions and frequency stability is necessary before CE marking.
How does the FOBLOQF-4S1 handle synchronization between transmitter and receiver after power loss or replacement?
The FOBLOQF-4S1 relies on a paired receiver that stores the transmitter’s serial number and synchronization counter. After power loss, the receiver accepts the next valid code within a limited window of counter values to prevent desynchronization. If the counter drifts beyond this window—such as after prolonged disuse—the receiver must be placed into learn mode to re-register the FOBLOQF-4S1. This process typically involves pressing a button on the receiver within a short time after transmitting from the remote.
Can multiple FOBLOQF-4S1 units be used in the same area without cross-talk or interference?
Yes, but with limitations. Each FOBLOQF-4S1 is factory-programmed with a unique 28-bit serial number, allowing multiple units to coexist if paired with distinct receivers. However, since all operate on the same 433.92MHz frequency, simultaneous transmissions can cause collisions. In dense deployments, time-division usage or adding a simple delay circuit between button presses can reduce the likelihood of overlapping signals. For high-density applications, frequency-hopping or coded channel selection would be preferable, but the FOBLOQF-4S1 does not support such features.
What are the mechanical and environmental constraints when installing the FOBLOQF-4S1 in outdoor or industrial enclosures?
The FOBLOQF-4S1 is supplied in a box packaging without conformal coating or IP rating, making it susceptible to moisture and dust in harsh environments. While MSL is listed as Not Applicable, prolonged exposure to condensation or high humidity can degrade RF performance or cause corrosion. For outdoor use, it should be mounted inside a sealed, UV-resistant enclosure with desiccant, and the antenna should be externally routed through a waterproof gland to maintain signal integrity and longevity.

Parts with Similar Specifications

The three parts on the right have similar specifications to RF Solutions FOBLOQF-4S1

Product Attribute FOBLOQF-4S2 FOBLOQF-4S3 FOBLOQF-4S4 FOBLOQF-4T1
Part Number FOBLOQF-4S2 FOBLOQF-4S3 FOBLOQF-4S4 FOBLOQF-4T1
Manufacturer RF Solutions RF Solutions RF Solutions RF Solutions
Data Rate (Max) - - - -
Series - - - -
Interface - - - -
Voltage - Supply - - - -
Modulation or Protocol - - - -
Function - - - -
Power - Output - - - -
Applications - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Frequency - - - -
Sensitivity - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Features - - - Simultaneous Sampling

FOBLOQF-4S1 Datasheet PDF

Download FOBLOQF-4S1 pdf datasheets and RF Solutions documentation for FOBLOQF-4S1 - RF Solutions.

Datasheets
FOBLOQF Remote Control.pdf

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Customer Reviews

Evaluation: 10 Articles

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    Aug 5, 2026

    Purchased this DSP controller for a motor control application. Stable processing performance and very good response under varying loads.

  • FPGA***dio
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    This FPGA handled our logic design without any surprises. Configuration completed quickly and timing met the project requirements.

  • Nord***mbedded
    Jul 20, 2026

    Reliable FPGA with predictable behavior. Configuration and testing went smoothly, making development faster than expected.

  • Arch***ct
    Jul 15, 2026

    Used this device in a communication signal processing board. Stable timing and no unexpected issues during implementation.

  • FPGA***lorer88
    Jul 7, 2026

    The FPGA works properly and all functions operate as expected. Documentation required some additional research, but overall it is a usable device for smaller signal processing projects.

  • Nath***oleman
    Jun 29, 2026

    Used this sensor component in an industrial automation setup. Detection accuracy was consistent and installation was straightforward.

  • Emil***rperTech
    Jun 23, 2026

    Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.

  • Liam***terTech
    Jun 15, 2026

    Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
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QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
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We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.
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Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


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Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
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  • GB/T 27922-2011
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  • IPC
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FOBLOQF-4S1 Image

FOBLOQF-4S1

RF Solutions
98D-FOBLOQF-4S1

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