By the SightShield team · · 3 min read
Most homes have no smoke alarm
Many apartment buildings in Bangalore have a fire alarm system in common areas and sometimes in flats, but most independent houses and villas have nothing. Home fires often start at night from electrical faults, inverters and battery packs, mosquito coils, pooja lamps or chargers, and the danger is smoke reaching sleeping people before they wake. A smoke alarm gives the minutes needed to get out.
Where to fit them
| Location | Alarm type | Why |
|---|---|---|
| Hallway or landing outside bedrooms | Smoke | Wakes sleepers before smoke reaches them |
| Each bedroom | Smoke | Chargers, ACs and heaters in bedrooms are common sources |
| Living room and pooja room | Smoke | Lamps, TVs and decorative lights |
| Kitchen | Heat (not smoke) | Cooking smoke causes constant false alarms with smoke alarms |
| Inverter, UPS or battery area | Smoke | Battery and wiring faults |
| Each floor of a villa, including stair landings | Smoke | Smoke rises up stairwells |
| Garage with EV charger | Heat or smoke depending on fumes | Charging and car battery risks |
Battery, mains or interlinked?
- Battery-only alarms are easy to fit anywhere; choose sealed 10-year batteries to avoid the chirping and removed batteries problem.
- Mains-powered alarms with battery backup are best wired in during construction or renovation.
- Interlinked alarms sound together, so a fire in the ground-floor living room wakes people sleeping on the second floor; wireless interlinking avoids new wiring in existing villas.
- Connected alarms linked to a home automation hub or alarm panel send alerts to your phone, useful if a fire starts while you are away.
Avoiding false alarms
Most people who remove smoke alarms do so because of false alarms. Keep smoke alarms at least about 3 m away from the stove, use a heat alarm in the kitchen instead, and avoid mounting alarms right next to bathroom doors where steam escapes, or AC outlets that blow air across them. Incense and pooja lamps placed directly under an alarm can trigger it; move the alarm a little rather than removing it.
Smoke vs heat detectors →Home alarms vs a building fire alarm
Home smoke alarms protect the people in that home. An apartment building’s fire alarm system protects the building and is connected to a central panel, hooters and the fire control room, and is required by fire regulations for many buildings. If your flat already has detectors connected to the building panel, do not remove or cover them; add home smoke alarms only where the building system does not reach, and inform the facility team.
Fire alarm for apartments →Testing and replacement
Press the test button once a month, vacuum the vents twice a year, and replace alarms around ten years after installation; the date is printed on the back. Teach children what the alarm sounds like and agree a meeting point outside.
Worked example
A three-storey villa in Whitefield had no fire detection. We fitted wirelessly interlinked smoke alarms in every bedroom, the landings and living room, a heat alarm in the kitchen and a smoke alarm near the inverter and battery rack, all linked to the home automation hub. When the downstairs alarm goes off, every alarm sounds and both owners get a phone alert. Fitting took one day with no new wiring.
Quick answers
Should I put a smoke alarm in the kitchen?+
Use a heat alarm in the kitchen; smoke alarms there give frequent false alarms from cooking.
How many smoke alarms does a 3 BHK need?+
Typically one per bedroom, one in the hallway and one in the living area, plus a heat alarm in the kitchen.
What are interlinked smoke alarms?+
Alarms that sound together when any one detects smoke, by wire or wirelessly.
Can smoke alarms send alerts to my phone?+
Yes, connected alarms linked to a home automation hub or alarm panel can.
How long do smoke alarms last?+
About ten years; replace them by the date printed on the back.