Global Systems United is an Arizona-based company offering a permitting, monitors, detectors, sensors, CO2 leak detection, and fire alarm systems. We provide installation and maintenance for all types

your fire safety systems in top condition. We specialize in extinguisher inspections and sales, fire alarm inspections and repairs, fire sprinkler inspections and repairs, fire hydrant flow tests, exit

, and sales of fire alarms, smoke detectors, carbon monoxide detectors, burglar alarms, surveillance systems, card access controls systems, monitoring services, and

comprehensive fire protection services for commercial and residential buildings in Phoenix and Tucson. Our services include alarm system installation and maintenance, as well as repair and inspection services to guarantee safety from fire-related