B-Tech Fire & Security builds solutions for six core industries, and each one carries its own code obligations and operational realities. K–12 schools and university buildings need mass notification, visitor management, and lockdown-capable access control. Retail and restaurant locations rely on video surveillance for loss prevention, drive-thru coverage, and after-hours intrusion detection. Healthcare and medical offices require HIPAA-conscious camera placement, controlled medication-room access, and inspection documentation ready for surveyors. Multi-family residential communities depend on video intercom entry, common-area cameras, and unit-level smoke and heat detection. Light industrial and warehousing sites need perimeter surveillance, dock-door credentialing, and suppression system monitoring. Across all of them, our commercial fire alarm work is engineered to NFPA, IBC, IFC, and local AHJ requirements, with calibrated test instrumentation and traceable, audit-ready inspection records that reduce AHJ findings and costly re-inspections (B-Tech services).