Micro Smoke Alarm
SK-20 is the smallest domestic smoke alarm in the world, this stylish
smoke alarm operated by a 3V lithium battery for 10 year lifetime.
SK-20 smoke alarm utilizes photoelectric detection technology to sense
smoke from different fires. Unit have a sensing chamber which uses a
beam of light and a light sensor. Smoke particles entering the chamber
change the amount of light that reaches the sensor. The alarm sounds
when the smoke density reaches a preset level. The smoke alarm is
equipped a self-diagnosticand checking feature to ensure correct
operation through its service life.
The device builds the buzzer as a test button on the front cover,however
if false alarms occur, the button can be used to silence the sound for
The batteries is sealed in the detector, No need to replace. After 10
years of powered operation, an audible warning will occur indicating
that the detector should be replaced. In case of the horn will pulse
on three times for 10ms separately by 330ms every 43 seconds to
warm to replace the detector. When battery come to the end of life,
the smoke alarm will release short chirps to warn from low batteries.
The detector It is strongly recommended to replace the detector
immediately when the low battery warning begins.