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  • SECO-LARM ENFORCER SH-816S — Self-Contained Siren or Siren/Strobe Manual

    August 31, 2026 3 min read

    Installation manual for the SECO-LARM ENFORCER SH-816S self-contained siren or siren/strobe, weatherproof for indoor or outdoor use.

    Full text manual (for reference)

    Installation manual for the SECO-LARM ENFORCER SH-816S Self-Contained Siren or Siren/Strobe — a weatherproof, multi-purpose siren, speaker, and optional strobe for indoor or outdoor use.

    Overview

    The ENFORCER Siren/Strobe series can serve as a standard alarm siren, but also includes an audio input for playing back broadcast messages. The SH-816S-SQ variant adds a xenon-tube strobe light with a choice of amber, blue, clear, or red lens, triggerable separately from the siren. It mounts to a wall or a standard single-gang, double-gang, or C-type back box.

    Model Variants

    • SH-816S-BQ — Siren only
    • SH-816S-SQ/x — Siren/Strobe (replace "x" with the first letter of the lens color: amber, clear, blue, red)

    Specifications

    Spec SH-816S-BQ (Siren) SH-816S-SQ (Siren/Strobe)
    Operating voltage 9–15 VDC
    Current draw (strobe) N/A 190mA @ 12VDC
    Current draw (siren, max.) 680mA @ 12VDC
    Current draw (both, max.) 870mA @ 12VDC
    Siren volume 120dB
    Speaker rating 25W Peak
    Strobe flash rate N/A 75 per minute
    Tamper output 100mA @ 30 VAC/VDC
    IP Rating IP65
    Operating humidity 0–95%
    Operating temperature -4° to 131°F (-20° to 55°C)
    Housing material White polycarbonate plastic
    Dimensions 6-1/8" x 4-15/16" x 4-1/2" (155x126x115mm) 6-1/8" x 7" x 4-1/2" (155x178x115mm)
    Weight 1lb 13oz (812g) 2lb 2oz (957g)

    Key Features

    • 9–15 VDC operation, low current draw
    • 120dB warble-tone siren
    • 25W speaker (siren and speaker input cannot be used at the same time)
    • Audio input for broadcast messages
    • Built-in tamper alarm output
    • Weatherproof for outdoor/indoor use (IP65)
    • Mounts directly to a wall or common back boxes
    • SQ variant adds: bright xenon strobe, separately triggerable from the siren, available in 4 lens colors

    Parts List

    • 1x Siren unit
    • 4x Mounting screws
    • 4x Plastic wall anchors
    • 1x Back removal tool
    • 1x Manual

    Installation Steps

    1. Determine the installation location — surface-mount or to a back box.
    2. Remove the two screws from the two tabs attaching the back to the main unit.
    3. Squeeze the included back removal tool and insert it through the wiring access hole in the back — release and pull carefully until the back separates from the unit.
    4. Thread the wires (up to 8, depending on the application) through the center hole in the back, then install the back to the wall/backbox using the four mounting holes, oriented so the engraved arrow points up. Avoid the tamper switch hole. For non-standard boxes, drill out other engraved oval indentations as needed.
    5. Connect the wires to the terminals per the desired application (see wiring terminals below).
    6. Carefully slide the main unit onto the back, checking the orientation notch/arrows and confirming the terminal plugs are correctly engaged.
    7. Reattach the main unit to the back with the two screws removed in step 2.

    Wiring Terminals

    The unit's back terminal block includes: STROBE +12VDC, GND, SIREN +12VDC, TAMPER (x2), and SPEAKER (x2). Two application diagrams are provided for wiring the siren, strobe, and audio input, plus a tamper switch built into the back for enclosure-open detection.

    Sample Applications

    • Triggering both siren and strobe together (with optional audio input): connect a single triggering device across the alarm system's output, wired to both the SIREN and STROBE +12VDC terminals in parallel.
    • Siren and strobe triggered by separate devices (with optional audio input): use two independent triggering devices, one wired to SIREN +12VDC and one to STROBE +12VDC.

    Important: the speaker input and siren input cannot be connected at the same time.

    Warranty

    Warranted against defects in material and workmanship for one (1) year from the date of sale to the original customer. SECO-LARM's obligation is limited to repair or replacement of the defective part, transportation prepaid.

    Also Available from SECO-LARM

    Electronic Chimes, Dual-Tone Wall Sirens, and LED Strobe Lights are also available as standalone accessories in the ENFORCER line.