SDi is the world's leading provider of specialized equipment for the fire protection and security industries. With a commitment to offering our customers an unparalleled level of service, SDi has been providing manufacturer approved and UL listed products for over a decade. Uniquely positioned within the fire protection industry, SDi maintains affiliations with key industry associations and several NFPA committees. Dedicated to introducing exceptional products and innovative solutions to the fire and security industries, SDi is not only providing quality today but developing technologies for tomorrow.