STI Select-Alert Siren/Strobe ...
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STI Select-Alert Siren/Strobe Alarms – Surface & Round Security Alerts with LED Indicators

STI Select-Alert Siren/Strobe Alarms – Surface & Round Security Alerts with LED Indicators

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Model: STI-SA5500-A
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STI Select-Alert Siren/Strobe Alarms – Surface & Round Security Alerts with LED Indicators

The STI Select-Alert Siren/Strobe Series offers effective visual and audible alerts for unauthorized access, theft, vandalism, or emergency response. Available in both round (SA5500) and rectangular (SA5600) models, these units feature selectable alarm tones, high-intensity LED strobes, and rugged polycarbonate housings. Models offer volume control, flash pattern options, and operate on 12–24VDC. The SA5500 includes strobe speed and battery backup, while the SA5600 offers dry contact lens tamper detection. Rated IP66 and IP54 respectively, these alerts suit a wide range of indoor and semi-outdoor environments.

Key Features

  • 28 Selectable Alarm Tones
  • High-Intensity LED Strobe (4–8 flash patterns)
  • 85–105 dB Volume with control
  • Durable Polycarbonate Housing
  • Available in Round (SA5500) or Rectangular (SA5600)
  • Surface-Mount Installation
  • Power: 12–24VDC (Battery backup in SA5500)
  • Optional Tamper Detection (SA5600)
  • IP66 (SA5500) / IP54 (SA5600)
  • Lens Color Options: Red, Blue, Green, Amber, White, Clear

 

Manufacturer Resources

VIEW SPEC SHEET

Product Specs

Alarm Tones:
28 Selectable Sounds
Certifications:
Meets CE & UK-CA Requirements
Housing Material:
Durable Polycarbonate
IP Rating:
IP66 (SA5500), IP54 (SA5600)
LED Count:
High-Intensity LEDs
Power Source:
12–24VDC, SA5500 includes 9V Battery Backup
Product Line:
STI Select-Alert Siren/Strobe Series
Strobe Patterns:
Up to 8 Flash Patterns
Volume Control:
85 dB to 105 dB
Warranty:
3-Year Housing, 1-Year Electronics
Lens Colors:
Amber, Blue, Green, Red, White, Clear (SA5500 only)
Tamper Resistance:
Dry Contact Lens Tamper (SA5600)
Operating Temperature:
-4°F to 140°F (-20°C to 60°C)
Product Model:
Round (SA5500), Rectangle (SA5600)
Product Group:
Safety
Product Subgroup:
Alarm Systems
Product Type:
Select-Alert Siren/Strobe Alarms – Surface & Round Security Alerts with LED Indicators
Department:
Safety
Installation Options:
Surface Mount

Parts & Accessories

    Safety Technology International STI-SA5500-A – Frequently Asked Questions

    1) What is the difference between the STI SA5500 round and SA5600 rectangular Select-Alert siren/strobe?
    Shape is the obvious difference, but the spec split matters more. The round SA5500 is rated IP66 and includes a 9V battery backup, so it keeps working if the 12-24VDC supply drops. The rectangular SA5600 is rated IP54 and adds a dry contact lens tamper feature, which signals if someone pops the lens. Both give you 28 selectable tones, up to 8 flash patterns, adjustable 85 to 105 dB output and a polycarbonate housing. If the unit sees weather or washdown, go round; if you need tamper reporting back to a panel, go rectangular.
    2) Can the STI Select-Alert siren/strobe be mounted outdoors under a canopy or in a loading dock?
    Semi-outdoor placement is what these are built for. The round SA5500 carries an IP66 rating, so it handles dust and water jets and is the one to use in exposed or washdown areas. The rectangular SA5600 is IP54, which covers dust protection and splashing water only, so keep it under cover. Both are rated from -4F to 140F (-20C to 60C), which covers most unconditioned docks, garages and stairwells.
    3) What power supply do I need to run an STI Select-Alert alarm, and does it keep sounding if power fails?
    Run it off 12 to 24VDC, so an existing access control or alarm panel auxiliary output will usually feed it without a separate transformer. The round SA5500 also takes a 9V battery backup, so it stays live through a power interruption. The rectangular SA5600 does not include that backup, so on critical openings where a power loss cannot silence the alert, specify the round model.
    4) Will the SA5600 tell my alarm panel if someone tampers with it?
    The rectangular SA5600 has a dry contact lens tamper output, so it reports when the lens is removed. Dry contact means it is a voltage-free switch closure you wire into a zone input on your panel or access control board. The round SA5500 does not carry that feature, so if tamper reporting is in the spec, the rectangle is the model to order.
    5) Which lens colors can I get on the STI Select-Alert siren/strobe?
    Amber, blue, green, red and white are available on both the round and rectangular models. Clear is offered on the round SA5500. Color coding is useful when you run several units in one facility, for example red on emergency exits and amber on restricted storage, so staff know what tripped from across the room.
    6) Can I turn the STI Select-Alert siren down so it does not disturb a whole building?
    Volume is adjustable from 85 dB up to 105 dB, so you can set it low for an office corridor or a school hallway and run it wide open in a warehouse or an exterior yard. You also pick from 28 selectable tones, which lets you give different alarms in the same building distinct sounds instead of one indistinguishable blast.
    7) Can I use one STI Select-Alert unit for both the audible and visual alert, or do I need two devices?
    One unit does both. Each Select-Alert combines a high-intensity LED strobe with the siren, so you get the visual and audible alert from a single surface-mounted device on one 12-24VDC circuit. The strobe runs up to 8 flash patterns, so you can differentiate units or pick a pattern that reads clearly in a bright space.
    8) Is the STI Select-Alert siren/strobe tough enough for a school corridor or public-facing area?
    The housing is polycarbonate, which is the impact-resistant plastic used where a unit will take knocks or deliberate abuse, and the whole assembly is sealed to IP66 on the round SA5500. For public corridors and student areas the rectangular SA5600 adds lens tamper detection, so you know when someone has been at it rather than finding a dead device on a test.
    9) Does the STI Select-Alert alarm carry any certifications for a European or UK project?
    The Select-Alert siren/strobe series meets CE and UK-CA requirements, which covers the marking a specifier will look for on European and UK work.
    How fast can I get the Safety Technology International STI-SA5500-A delivered?
    Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
    Can I return it if it doesn’t work for me?
    Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
    Does the Safety Technology International STI-SA5500-A come with a warranty?
    Absolutely. The Safety Technology International STI-SA5500-A is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
    How do I get technical support or installation help for the Safety Technology International STI-SA5500-A?
    You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
    Why buy the Safety Technology International STI-SA5500-A from ZenSupply?
    ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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