Standalone battery operated conventional

Standalone battery operated conventional smoke detector

This smoke alarm is a battery operated smoke detector that utilizes photoelectric sensing technology.
When the smoke concentration on the site reaches the alarm threshold or the test button is pressed and held down, the LED of the alarm will turn from slow flashing to quick flashing and will give out sound alarm signals.
When the smoke concentration drops below the alarm threshold or the test button is released, the alarm will recover to its normal state (the Alarm state is not locked, the LED will restore to slow flashing and the alarm will stop).