Protective Systems

Since 1970, Protective Systems. Of Seattle has been serving families, businesses and commercial facilities with security, fire and custom electronics. PSI stands for Pride, Service and Integrity - the cornerstones of our success. At PSI, we've had the pleasure of serving some Western Washington families for a span of three generations. Can you think of a better testimonial to client satisfaction and loyalty Protective Systems. PSI) is a reputable Seattle-based firm that was established back in 1970. Family owned & operated, PSI is a supplier of home and business security and fire safety systems.