Menu
0
0

Your Cart is Empty

Add description, images, menus and links to your mega menu

A column with no settings can be used as a spacer

Link to your collections, sales and even external links

Add up to five columns

  • Add description, images, menus and links to your mega menu

  • A column with no settings can be used as a spacer

  • Link to your collections, sales and even external links

  • Add up to five columns

    • Home  / Product Manuals & Documentation
    Previous  / Next

    SECO-LARM ENFORCER ST-Series Power Supplies/Chargers (ST-1206/ST-2406 Series) — Manual

    August 31, 2026 3 min read

    Installation manual and specifications for SECO-LARM's ENFORCER ST-series power supplies/chargers with automatic backup battery switchover, covering ST-1206-1.5AQ through ST-2406-10AQ.

    💾 Download Original PDF 🛒 View Product
    Full text manual (for reference)

    Manual for SECO-LARM's ENFORCER ST-series power supplies/chargers (ST-1206-1.5AQ, ST-2406-2AQ, ST-2406-3AQ, ST-2406-5AQ, ST-2406-7AQ, ST-2406-10AQ) — regulated power supplies with automatic backup-battery switchover for alarm and access control systems.

    Overview

    The ST-series power supplies/chargers keep alarm and access control systems powered, protected by fused outputs, input polarity protection diodes, and backup battery reverse-polarity protection. Each model provides automatic recharging of backup batteries, automatic switchover to backup power if main power is lost, programmable DC voltage output, and regulated/filtered output.

    Features

    • Automatic recharging of backup batteries
    • Automatic switchover to backup battery if main power is lost or cut
    • Built-in battery short-circuit protection
    • LEDs indicate power status
    • High efficiency at full load; heat-sink-free design (except ST-2406-7AQ / ST-2406-10AQ)
    • Programmable DC voltage output
    • Regulated and filtered output voltage
    • Fused output for a regulated charge
    • Includes foam tape and battery leads for easy installation
    • Low-battery cutoff (ST-2406-2AQ, ST-2406-3AQ, and ST-2406-5AQ only)

    Specifications by Model

    Spec ST-1206-1.5AQ ST-2406-2AQ ST-2406-3AQ ST-2406-5AQ ST-2406-7AQ ST-2406-10AQ
    DC Voltage 6, 12 6, 12, 24
    Current (Continuous) 1.5A 2.0A 2.5A 4.0A 7.0A 9.0A
    Current (Peak) — 2.0A — 3.0A 5.0A 7.5A / 10.0A
    Max Charge Current 6V=100mA, 12V=220mA, 24V=450mA (model-dependent)
    Master Fuse 3A 5A 10A
    Low Battery Cutoff No When battery voltage <20% of set output voltage No
    Operating Temp -4°F to 149°F (-20°C to 65°C)
    Dimensions 64x70x30mm 64x70x30mm 73x73x35mm 73x76x33mm 140x130x55mm

    Parts List

    • 1x Power Supply/Charger
    • 2x Acrylic foam tape for PCB mount (4x on ST-2406-7AQ / ST-2406-10AQ)
    • 2x Wires for backup battery charger
    • 1x Manual

    Installation

    1. Mount the PC board in the desired location or enclosure, keeping it accessible for future servicing.
    2. Set the desired DC output voltage (6, 12, or 24VDC*) using the DIP switch. Disconnect power before changing DIP switches. Default output setting is 12VDC. (*ST-1206-1.5AQ is 6/12VDC only.)
    3. Connect a transformer with appropriate voltage/VA rating for your model and desired output (see the manual's transformer compatibility table, e.g. 12VAC/20VA for 6VDC output on smaller models, up to 24–28VAC/350VA for 24VDC output on the largest model).
    4. Connect wires to their respective terminals per the wiring diagram: AC input, DC output (–/+), and battery (BAT –/+).

    DIP Switch Voltage Selection

    Voltage SW1 SW2
    6V ON ON
    12V ON OFF
    24V* OFF OFF

    Note: DIP switch mapping shown is for ST-1206-1.5AQ, ST-2406-2AQ, ST-2406-3AQ, ST-2406-5AQ. ST-2406-7AQ / ST-2406-10AQ use a different mapping — see the full manual for the second table.

    LED Status Indicators

    Green LED Red/Blue LED Status
    ON ON Normal
    OFF ON No VAC input
    ON OFF No VDC output
    OFF OFF No VAC input and no VDC output

    Warnings

    • Using a higher AC input than recommended may damage the unit.
    • Avoid touching the heat sink — it may be very hot under full load.
    • Do not use metal spacers to mount the power supply's PC board.
    • Connect only to a rechargeable backup battery — a non-rechargeable battery can damage the unit or the alarm/access control panel.
    • Before connecting external devices, temporarily power up the unit and measure DC output voltage first; disconnect power before making final connections.

    Troubleshooting

    Symptom Check
    No DC output AC input/backup battery voltage normal? Output voltage setting correct? AC input wattage correct?
    Low DC voltage output If battery is supplying power, is the battery voltage normal? Is the power supply board overloaded?
    No backup battery power Is battery voltage normal or already discharged? Has the master fuse burned out?

    Warranty

    Warranted against defects in material and workmanship for 1 year from date of sale to the original customer. SECO-LARM's obligation is limited to repair or replacement of defective parts (transportation prepaid to SECO-LARM). Void if damage results from acts of God, misuse, abuse, neglect, unauthorized repair/alteration, or improper installation.

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