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    SECO-LARM SK-910RD4 vs. SK-910R4Q — 4-Channel RF Receiver Comparison Chart

    September 08, 2026 2 min read

    Side-by-side comparison of the SECO-LARM ENFORCER SK-910RD4 (new) 4-Channel RF Receiver against the previous SK-910R4Q model — relay functions, transmitter learning capacity, dual frequency support, and dimensions.

    💾 Download Original PDF
    Full text manual (for reference)

    Comparison chart: SECO-LARM ENFORCER SK-910RD4 4-Channel RF Receiver (new model) vs. the previous SK-910R4Q. If you're deciding between the two, or verifying compatibility with existing SECO-LARM RF accessories, this covers the feature-by-feature differences.

    What's New in the SK-910RD4

    • Relay output function: 0.5~99 seconds timed output, 1~99 minutes timed output, toggle output, latch output, validity output (vs. fixed 1/5/10/20/30-second timed output, toggle, latch, validity on the SK-910R4Q)
    • Relay output time programming: by tactile switch (vs. 3-pin DIP switch on the previous model)
    • Transmitter learning: up to 60 different transmitter buttons per channel, 240 total (first-in-first-out) — vs. up to 15 per channel / 60 total on the previous model
    • Program switch: single Learning & Program switch (vs. a Learning switch x1 per channel plus a separate Program switch — 5 switches total on the previous model)
    • LED Indicator: alphanumeric display (vs. one red status LED per channel, 4 total, on the previous model)
    • External antenna: no need to cut jumper (previous model required cutting the jumper)
    • Antenna is concealed inside the housing (previous model's antenna was exposed outside the housing)
    • OEM logo printing available on the case (previous model always shows the SL logo)

    Dual Frequency Operation

    Model Dual Frequency Support
    SK-910RD4 (New) 315MHz and 433.92MHz using the internal antenna, or 315MHz with the SK-91ERSD Extended Range Antenna / 433.92MHz with the SK-93ERSD Extended Range Antenna
    SK-910R4Q (Previous) 315MHz only, with the internal antenna or the SK-91ERSD Extended Range Antenna

    Shared / Common Specifications

    Spec SK-910RD4 (New) SK-910R4Q (Previous)
    RF Range Consistent, stable performance up to 500ft (150m)* Up to 500ft (150m)*
    Dimensions 4-7/32" x 2-3/8" x 7/8" (107 x 60 x 22.8 mm) 5-5/16" x 3-15/16" x 15/64" (135 x 100 x 27.5 mm)

    *Actual operating range will vary greatly depending on the installation and operating environment.

    Manufacturer

    SECO-LARM U.S.A., Inc., 16842 Millikan Avenue, Irvine, CA 92606. Phone: (949) 261-2999 / (800) 662-0800. Copyright © 2023 SECO-LARM U.S.A., Inc. All rights reserved. All trademarks are the property of SECO-LARM U.S.A., Inc. or their respective owners. Specifications subject to change without notice.