SD500-PSDA Addressable Dual Action Pull Station – Manual Fire Alarm Box for Silent Knight Commercial Buildings
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SD500-PSDA Addressable Dual Action Pull Station – Manual Fire Alarm Box for Silent Knight Commercial Buildings

$335.00

Specifications

The SD500-PSDA is a Silent Knight dual-action addressable manual pull station, requiring two motions for activation to deter nuisance pulls while providing device-level reporting to SD500 panels.

  • Model: SD500-PSDA Dual Action Pull Station
  • Brand: Silent Knight
  • Activation: Dual action (two motions required)
  • Addressability: Individually addressable on SD500 loop
  • Panel Compatibility: Silent Knight SD500-series panels
  • Typical Locations: Schools, retail, hospitality, public assembly
  • Housing: Heavy-use commercial pull station enclosure
  • Sibling Model: SD500-PS (single-action alternative)
  • Reset: Requires Silent Knight SD500 reset key
  • Mounting: Standard manual-station footprint
  • Finish: Silent Knight standard red
  • Application: Addressable fire alarm systems with high foot traffic

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SD500-PSDA Addressable Dual Action Pull Station – Manual Fire Alarm Box for Silent Knight Commercial Buildings
SD500-PSDA Addressable Dual Action Pull Station – Manual Fire Alarm Box for Silent Knight Commercial Buildings
$335.00

SD500-PSDA Addressable Pull Station

The SD500-PSDA Addressable Pull Station is Silent Knight’s dual-action version of its SD500 addressable manual station. Unlike single-action stations, activating the SD500-PSDA requires two deliberate motions typically a lift (or push) followed by a pull a design choice that meaningfully reduces accidental or mischievous activations without adding to legitimate response time. This makes the SD500-PSDA especially appropriate for schools, high-traffic retail spaces, hospitality lobbies, and public assembly buildings where nuisance pulls are an operational concern. Like the rest of the SD500 family, it reports its individual address back to the Silent Knight fire alarm panel, so each activation carries device-specific identification.

Features

  • Dual-action activation requires two deliberate motions
  • Significantly reduces accidental and malicious pulls
  • Addressable reporting on Silent Knight SD500 loops
  • Ideal for schools, lobbies, retail floors, and assembly spaces
  • Compatible with other SD500 intelligent field devices
  • Same mounting footprint as SD500-PS for flexible retrofits
  • Commercial-grade housing engineered for public-area wear

Benefits

Facilities that serve large numbers of transient occupants schools, shopping centers, transportation hubs, sports venues regularly face a predictable operational pain: accidental and prankster pulls that trigger fire department responses, building evacuations, and real financial cost. The SD500-PSDA’s dual-action requirement is engineered exactly for that problem. Requiring two deliberate motions (rather than one) filters out the vast majority of incidental contact while costing almost nothing in legitimate response time. Combined with the SD500 platform’s precise per-device reporting, that means false pulls are easier to attribute, investigate, and prevent. For administrators managing high-traffic buildings, the SD500-PSDA is a quiet workhorse that earns its keep every month.

Why Choose QuickShipFire?

  • Dual-action stock specifically kept for school, retail, and venue customers
  • Placement guidance for mixing dual-action and single-action stations by floor plan
  • Recommendations on tamper alarm covers that pair well with dual-action stations
  • Rush ordering for post-vandalism replacements ahead of the next inspection
  • Coaching on how to train staff on the two-motion activation procedure
Why choose dual-action over single-action for public spaces?
Dual-action requires two deliberate motions to activate, this sharply reduces accidental or mischievous pulls that are common in high-traffic public spaces like schools, malls, and lobbies.
Does dual-action slow down legitimate fire response?
In practice, no meaningful amount, the two motions are fast to perform when someone genuinely intends to activate the alarm, while still filtering out accidental brushes and casual tampering.
Can the SD500-PSDA be swapped in where an SD500-PS was previously installed?
Yes, both share the same mounting footprint and report to the same SD500 panel, so field conversion between single and dual action is typically straightforward.
Will dual-action stations satisfy code requirements for manual fire alarm initiation?
Yes, dual-action stations are approved manual initiation devices under NFPA 72 and applicable local code; the AHJ ultimately confirms acceptance for a given site.
Are there tamper covers that work with the SD500-PSDA?
Yes, clear polycarbonate anti-tamper covers (with or without local sounders) can be added on top of dual-action stations to further deter nuisance activations.
What's the typical mounting height for a SD500-PSDA?
Mounting height follows ADA and applicable code requirements generally 42"–48" from finished floor to operable part with exact height confirmed against local code.
Is the dual-action mechanism serviceable after activations?
Yes, the SD500-PSDA can be reset and reused using the appropriate Silent Knight reset key; severely damaged units from vandalism should be replaced rather than repaired.
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