D & H, a woman-owned business, was incorporated to supply a wide variety of alarms and communications equipment designed to provide facility protection and efficient communication. D & H has a technical and administrative staff with a combined experience of over 200 years – the kind of experience you obtain by “growing up” with the industry. This gives us the insight to understand your needs and the ability to provide consultation and design expertise that incorporates applicable codes and standards. All materials and services are delivered on your time schedule from the beginning of the job to the end of the job. Your project becomes our priority.