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    SECO-LARM ST-2406-3AEQ — Power Supply/Charger with Enclosure Spec Sheet

    September 08, 2026 2 min read

    Specification sheet for the SECO-LARM ST-2406-3AEQ power supply/charger with enclosure, providing regulated power to alarm systems and access control systems with automatic battery backup.

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    Full text manual (for reference)

    Specification sheet for the SECO-LARM ST-2406-3AEQ Power Supply/Charger with Enclosure — provides regulated power to alarm systems and access control systems with automatic battery backup.

    Overview

    The ST-2406-3AEQ power supply/charger provides sufficient power to alarm systems and access control systems while protecting them from surges, power outages, and other power anomalies. The enclosure has space for up to two backup batteries.

    Features

    • Automatic recharging of backup batteries
    • Automatic switchover to backup battery if main power is lost or cut
    • Built-in battery short-circuit protection
    • Low-battery cutoff
    • LEDs indicate power status
    • Programmable DC voltage output (6, 12, or 24 VDC)
    • Regulated and filtered output voltage
    • Fused output for a regulated charge
    • Heavy-duty steel case to protect power connections
    • Enclosure has space for up to two 4Ah or one 7Ah backup batteries
    • Includes battery leads for easy installation
    • High efficiency at full load; heat sink free design

    Specifications

    DC Voltage 6, 12, or 24 VDC (selectable)
    Operating voltage 12~24 VAC/VDC for 6VDC output, 18~24 VAC/VDC for 12VDC output, 24~28 VAC or 26~28 VDC for 24VDC output
    Status LEDs AC Input: Green. DC Output: Red/Blue (Blue indicates 24V).
    Current (continuous) 2.5A
    Current (peak) 3.0A
    Current output (max. charge) 6V = 100mA, 12V = 220mA, 24V = 450mA
    Master fuse 5A
    Low battery cutoff When battery voltage is <20%
    Operating temperature -4° to 149° F (-20° to 65° C)
    Board dimensions 2-7/8" x 2-7/8" x 1-3/8" (73 x 73 x 35 mm)
    Enclosure dimensions 10" x 7-3/4" x 3-1/2" (254 x 196 x 89 mm)

    Transformer Selection Table

    Output Voltage Recommended Transformer
    6VDC ST-UV16-W50Q (16VAC/50VA)
    12VDC ST-UVDA-W100Q (24~28VAC/100VA)
    24VDC ST-UVDA-W100Q (24~28VAC/100VA)

    Board Layout Overview

    The board includes an output voltage trimpot, DC Output LED (red/blue), AC Input LED (green), a voltage selector DIP switch, master fuse, and terminal connections for AC input, DC output, and battery backup — feeding an alarm or access control panel's VDC input.

    SECO-LARM U.S.A., Inc. — 16842 Millikan Avenue, Irvine, CA 92606 | (949) 261-2999 / (800) 662-0800 | sales@seco-larm.com | www.seco-larm.com