Conventional systems group multiple detectors into zones (2-32 zones) – alarm shows which zone triggered (₹80,000-200,000). Addressable systems give each detector unique address – shows exact detector location (₹300,000-1,500,000+). Addressable offers precise fire location, pre-alarm warnings, detailed logging, and self-diagnostics. Conventional for small buildings, addressable for large commercial buildings, hospitals, hotels.

Yes, NBC (National Building Code) Part 4 mandates fire alarm systems for: Commercial buildings over 15 meters height, Hotels and hospitals (all heights), Educational institutions over 500 occupants, Multiplexes and malls, IT/ITES buildings, Basement parking areas. Fire NOC from fire department required for occupancy certificate. Non-compliance prevents building occupancy and business operation license.

Per NBC and NFPA standards: One smoke detector covers 80-100 sq meters in rooms with standard ceiling height (3-4 meters). Small room (200 sq ft): 1 detector, Medium office (500 sq ft): 1-2 detectors, Large hall (2000 sq ft): 2-3 detectors. Spacing: Maximum 9 meters between detectors and 4.5 meters from walls. Higher ceilings require more detectors. We conduct site survey for exact count based on room dimensions and ceiling height.

Smoke detectors sense smoke particles (photoelectric) or combustion ions (ionization) – fast response 10-30 seconds. Heat detectors sense temperature (58°C or 78°C fixed) or rapid temperature rise – slower response 2-5 minutes. Use smoke detectors in bedrooms, offices, corridors. Use heat detectors in kitchens, garages, dusty areas where smoke causes false alarms. Multi-sensor detectors combine both for best reliability.

Yes, all fire alarm systems have built-in rechargeable battery backup. NBC requires minimum 24 hours standby power + 30 minutes alarm operation. Typical systems provide 24-72 hours backup depending on panel capacity. Batteries continuously charged when mains power available. Low battery alerts warn facility manager to check power. Critical for life safety – fire alarm must work 24/7 regardless of power status.

Cost varies by system type and building size: Conventional (2000 sq ft office) ₹80,000-150,000, Conventional (10,000 sq ft) ₹250,000-400,000, Addressable (5000 sq ft) ₹300,000-500,000, Addressable (20,000 sq ft) ₹800,000-1,500,000, Wireless system ₹200,000-800,000. Includes panel, detectors, hooters, manual call points, wiring, installation, testing. Free fire audit and NBC compliant design. AMC ₹20,000-80,000/year based on system size.