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  • SECO-LARM SK-910RD3/RD4 — 3- and 4-Channel RF Receivers Specifications

    September 08, 2026 2 min read

    Specifications for the upgraded SECO-LARM ENFORCER SK-910RD3 (3-channel) and SK-910RD4 (4-channel) RF receivers.

    Full text manual (for reference)

    Specification sheet for the SECO-LARM ENFORCER SK-910RD3 (3-channel) and SK-910RD4 (4-channel) upgraded RF receivers — dual-frequency, higher memory, internal antenna, and a smaller case than the previous generation.

    Overview

    The upgraded ENFORCER 3- and 4-channel RF receivers have increased memory, easier installation, an internal antenna, and a smaller case than earlier models. 315MHz is the standard operating frequency; the receivers will also operate at 433.92MHz with the optional Extended Range Antenna (SK-93ERSD). 433.92MHz-only models are also available — contact SECO-LARM for details.

    Features

    • Five programmable relay output modes: 0.5–99-second timed pulse, 1–99-minute timed pulse, toggle, latch, follow (validity)
    • Dual frequency operation with optional Extended Range Antenna (SK-93ERSD)
    • Range: up to 500ft (150m), or up to 1,000ft (300m) with optional Extended Range Antenna (SK-91ERSD)
    • Up to 60 transmitter button codes learnable per channel
    • Alphanumeric display indicates learn mode, transmitter learned, memory cleared, RF reception, and relay output mode
    • Display hidden in semi-transparent case until lit
    • Pushbutton programming — no jumpers to cut
    • Compatible with all ENFORCER transmitters of the same frequency

    Specifications

    Spec SK-910RD3 SK-910RD4
    Operating frequency 315MHz
    Certifications FCC, IC
    Memory capacity 60 transmitter button codes per channel
    Operating voltage 11–24 VAC/VDC
    Standby current (max) 16mA@12VDC, 12mA@24VDC
    Active current (max, per channel) 60mA@12VDC, 50mA@24VDC
    Relay contacts 3 4
    Relay rating Form C, 10A@14VDC
    Operating humidity 0–95% non-condensing
    Operating temperature 32° to 167°F (0° to 75°C)
    Dimensions 4⅛16" x ⅞" x 2⅛8" (107 x 23 x 60 mm)

    *Operating range varies greatly depending on installation and environment.

    Hardware Layout

    The unit's front features a terminal block and a selector button for programming; an alphanumeric LED display is hidden inside the semi-transparent case until lit, showing status codes during programming and operation.