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 ST-1206/ST-2406 Series — Power Supply/Chargers & Transformers Info

    September 08, 2026 2 min read

    Product information sheet for the SECO-LARM ST-1206/ST-2406 Series Power Supply/Chargers and matching open-frame transformers.

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

    Product information sheet for the SECO-LARM ST-1206/ST-2406 Series Power Supply/Chargers, along with their compatible ST-UV/ST-UVDA Series Open-Frame Transformers — regulated low-voltage DC power supplies with built-in battery backup charging, commonly used to power access control, alarm, and other security equipment.

    Power Supply/Charger Models

    Model DC Voltage Current (continuous / peak) Max Charge Current PCB Size
    ST-1206-1.5AQ 6/12 1.5A / 2.0A 6V=200mA, 12V=400mA 2-7/8" x 2-1/4" x 1" (73x57x25mm)
    ST-2406-2AQ 6/12/24 1.5A / 3.0A 6V=180mA, 12V=350mA, 24V=700mA 2-7/8" x 2-1/2" x 1-3/8" (73x64x35mm)
    ST-2406-3AQ 6/12/24 2.5A / 3.0A 6V=180mA, 12V=350mA, 24V=700mA 3-3/8" x 2-7/8" x 1-5/16" (81x73x33mm)
    ST-2406-5AQ 6/12/24 4.0A / 5.0A 6V=180mA, 12V=350mA, 24V=700mA 3-3/4" x 2-7/8" x 1-9/16" (95x73x40mm)
    ST-2406-7AQ 6/12/24 7.0A / 7.5A 6V=180mA, 12V=350mA, 24V=700mA 5-1/2" x 5-1/8" x 2-11/64" (140x130x55mm)
    ST-2406-10AQ 6/12/24 9.0A / 10.0A 6V=180mA, 12V=350mA, 24V=700mA 5-1/2" x 5-1/10" x 2" (140x130x51mm)

    Features

    • Converts low-voltage AC input power to low-voltage DC output power; regulated and filtered output voltage.
    • Short circuit protection; thermal protection and compensation; reverse polarity protected.
    • Built-in backup battery charger with fused protection; switches automatically in case of power loss.
    • 2 LEDs indicate AC power input and DC power output status.
    • Compatible with lead-acid or gel-type rechargeable batteries.
    • Includes foam tape and battery terminals for easy installation.

    Matching Open-Frame Transformers

    SECO-LARM's ST-1206/ST-2406 Series power supplies require a compatible AC transformer, selected by desired DC output voltage:

    Output Voltage ST-1206-1.5AQ ST-2406-2AQ ST-2406-3AQ ST-2406-5AQ ST-2406-7AQ ST-2406-10AQ
    6VDC 12VAC/20VA 12VAC/20VA ST-UV24-W50Q (24VAC/50VA) ST-UV16-W100Q (16VAC/100VA) ST-UVDA-W180Q (24-28VAC/180VA) ST-UV16-W100Q (16VAC/100VA)
    12VDC 16VAC/40VA 16VAC/40VA ST-UVDA-W100Q (24-28VAC/100VA) ST-UV-W100Q (16VAC/100VA) ST-UVDA-W180Q (24-28VAC/180VA) ST-UVDA-W180Q (24-28VAC/180VA)
    24VDC N/A ST-UV24-W50Q (24VAC/50VA) ST-UVDA-W100Q (24-28VAC/100VA) ST-UVDA-W180Q (24-28VAC/180VA) 24-28VAC/210VA ST-UV28-T350Q (28VAC/350VA)

    Transformer Specifications

    Model Output Voltage Amperage VA Input Voltage
    ST-UV24-W50Q 24VAC 2.1A 50VA 120VAC or 240VAC 50/60Hz
    ST-UV16-W100Q 16VAC 6.3A 100VA 120VAC or 240VAC 50/60Hz
    ST-UVDA-W100Q 24VAC / 28VAC 4.2A / 3.6A 100VA 120VAC or 240VAC 50/60Hz
    ST-UVDA-W180Q 24VAC / 28VAC 7.5A / 6.4A 180VA 120VAC or 240VAC 50/60Hz
    ST-UV28-T350Q 28VAC 12.5A 350VA 120VAC or 240VAC 50/60Hz

    Transformer features: shielded windings to reduce EMI, selectable input voltage, selectable output voltage on some models. The ST-UV28-T350Q is a toroidal-type transformer.

    Warranty

    SECO-LARM's policy is one of continual development; specifications and prices are subject to change without notice. SECO-LARM is not responsible for misprints.

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