Single Station Smoke Detector


  • The QA31 features advanced photoelectric technology for precise detection. When smoke is detected or the manual test button is pressed, the buzzer sounds and LED flash.
  • Low-Battery Warning: Unit beeps and LED flash intermittently to indicate battery needs replacing.
  • Simple test method: Press test button to hear the alarm sound and confirm the unit is in normal condition.
  • Easy installation: Install directly to proper location without any wiring.
  • It is equipped with 9VDC battery, and optional 110VAC or 220VAC power plug is available.
  • Optional relay output : COM. NO. NC.
  • Optional series connection wiring can co-activate up to 15 detectors.


Model QA31
Power 9V battery
Sensitivity Setting  Comply to EN14604
Indicator Standby: flash every 45 seconds
Alarm: flash and beep continuously
Battery abnormal: beeps and flash intermittently
Sound 90dB / M and above
Ambient Temperature  -10°C ~ +55°C
Material Fire-proof plastic
Dimensions 105mm(Dia.) x 40mm(H)
Weight About 150g
Color White
Optional Function Type 1 : 9V battery
Type 2 : includes signal transfer COM. N.O. N.C.
Type 3 : build-in 110VAC or 220VAC plug
Type 4 : Type 2 + Type 3