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Thermoptek FireAngel ST-625 - User Manual

Thermoptek FireAngel ST-625
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User Manual
Smoke Alarm
Model
ST-625

Questions and Answers

  • A
    Alexa ScottJul 27, 2025
    Why does my FireAngel® Smoke Alarm activate when no smoke is visible?
    • J
      Jamie KingJul 27, 2025
      If your FireAngel® smoke alarm activates when no smoke is visible, check its location to ensure it's suitable. You may also need to clean the smoke alarm.
  • J
    John HarrisAug 1, 2025
    What to do if my FireAngel® Smoke Alarm chirps intermittently?
    • V
      Victor WeberAug 2, 2025
      If your FireAngel® Smoke Alarm chirps intermittently, first check its location. Then, make sure that the chirping is actually coming from your smoke alarm. Try to eliminate other alarms as the source of the noise.
  • B
    bobbyharrisAug 8, 2025
    What to do if I experience frequent unwanted alarms from my FireAngel® smoke alarm?
    • D
      Dr. Jeanne SnyderAug 8, 2025
      If you are experiencing frequent unwanted alarms from your FireAngel® smoke alarm, you should first check the location of the alarm. Also, consider cleaning the smoke alarm.
  • J
    jessica86Aug 14, 2025
    What to do if FireAngel® smoke alarm does not sound during testing?
    • M
      Michelle FoxAug 14, 2025
      If your FireAngel® smoke alarm doesn't sound during testing, especially after activating it or replacing the batteries, wait a few seconds and try again. Ensure you firmly push the center of the test button. If the unit has been silenced and is in low sensitivity mode, wait 15 minutes before retesting.
  • J
    Jordan MontesAug 20, 2025
    What to do if the low battery warning silence chirp doesn't silence when I press the test button on my FireAngel® smoke alarm?
    • A
      ashley69Aug 20, 2025
      If the low battery warning silence chirp doesn't silence when you press the test button on your FireAngel® smoke alarm, it may be because the chirp has been silenced a maximum of 10 times, in which case you should replace the batteries. Also, if the red LED flashes at a separate time from the chirp, a fault is indicated.

Summary

Introduction

Sensor Technology

Application

Existing Homes

Recommends placement for family living units in existing buildings.

Multi-family or mixed occupant residence

Use in flats/bedsits with primary system in common areas.

Institutions and Hotels

Use in motels, hospitals, day care facilities, etc.

How to Install Your Smoke Alarm

Install Batteries

Explains how to insert batteries and what to expect.

Fitting the Base Plate

Details attaching the base plate to ceiling or wall.

Fit Your FireAngel Smoke Alarm

Describes attaching the alarm to the base plate.

Test Your FireAngel Smoke Alarm

Instructions on how to test the alarm after installation.

Operation

Normal Condition

Describes the normal LED flashing pattern.

Low Battery Condition

Explains the audible chirp for low battery and replacement advice.

Sleep Easy - Low Battery Warning Silence

Details silencing the low battery chirp temporarily.

Alarm Test

Alarm Smart Silence

Sleep Easy

Maintenance

Testing

Recommends weekly testing.

Cleaning

Advises cleaning every 3 months with a vacuum cleaner.

Troubleshooting

Thermoptek FireAngel ST-625 Specifications

General IconGeneral
TypeOptical Smoke Alarm
Sensor TypeOptical
Battery LifeUp to 10 years
Test ButtonYes
Alarm Sound Level85 dB
Weight200 g
Operating Temperature0°C to 40°C
Standards ComplianceEN 14604
Dimensions130mm x 130mm x 40mm
Power Source3V Lithium Battery (sealed for life)

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