penggera asap alat keselamatn dan kecemasan johor bahru, fire rescue equipment, Penggera Asap Alat Keselamatan Dan Kecemasan Johor Bahru
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SITERWELL smoke alarm is operated by 9V battery (6LR61 or 6F22), battery life 1 year minimum. With the photoelectric technology, it is more sensitive to detecting slow smolder fires which general thick, black smoke, little heat and may smolder for hours before bursting into flames. The smoke alarm do not contain the radioactive material which is harmless to environment.
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