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.