1. Smoke Alarm Installation and Interconnected Smoke Alarm Installation. Smoke alarms are your first line of defence in the event of a fire. Smoke alarms come in two main different types which are Ionization and photoelectric. Ionization smoke alarms have an ionization chamber inside the smoke alarm unit itself. The smoke alarm chamber consists of two plates about a centimetre apart. One of the plates is charged positive by the battery or transformer in AC models and the other plates is negative. Alpha particles constantly released by the americium knock electrons off of the atoms in the air, ionizing the oxygen and nitrogen atoms in the chamber. The positively-charged oxygen and nitrogen atoms are attracted to the negative plate and the electrons are attracted to the positive plate, generating a minuet, constant electrical current. Upon smoke entering the chamber, the smoke particles attach to the ions and neutralize them, so they do not reach the plate. The drop in current between the plates triggers the alarm. Photoelectric smoke alarms have an internal chamber with a light beam. When smoke enters the chamber it blocks the light from entering the photoelectric sensor causing an alarm to sound. Smoke may also cause the light beam to scatter creating an inconsistent pattern on the photocell causing the smoke alarm to sound. Photoelectric chambers can detect a smouldering fire faster than most ionization type smoke alarms. Battery or AC Smoke alarms are most commonly seen as battery operated units in older homes. Battery units are also common in situations where a smoke alarm is added and AC power is not accessible. AC units power the smoke alarm with standard AC current from the homes wiring. AC units are common in newer homes. Current new construction code requires smoke alarms to be AC with a battery built into the unit as a backup power source. Current Smoke Alarms Current smoke alarms used in new construction homes are AC and battery combination units as stated above. They also require a dual sensing smoke alarm unit. The most common dual sensing combination is either photoelectric and ionization or a combination ionization and carbon monoxide unit. Carbon Monoxide Alarms Carbon monoxide also called the invisible killer is odourless and colourless gas. Carbon monoxide is most commonly created in the home when unburnt or improperly vented heating equipment releases the gas. Carbon monoxide can be created from natural gas heaters, wood burners, and oil burners. Carbon monoxide can also enter the home from the exhaust of a running vehicle or generator. Carbon monoxide effects some people easier than others. People such as elderly, pregnant women, infants, and people with emphysema, asthma, or heart disease can suffer the effects of carbon monoxide much quicker than a healthy person.

2. Smoke Alarm Installation We can install most major brands of smoke alarms. We highly recommended the AC with battery backup units for superior performance. About AAA Fix-It AAA Fix-It is a leader in home repair and maintenance services specializing in air conditioning, plumbing services, painting, electrical and remodelling services for home and commercial customers. Since 2010, homeowners across Kuala Lumpur have been calling on AAA Fix-It for our professional craftsmanship and exemplary customer service. For more information or to receive a quotation please contact AAA Fix-It Kuala Lumpur Tel.: +6 (3) 4043-6090 - E-Mail: info@aaa.my - Internet: http://www.aaa.my