Control Systems Inc. designs, installs, inspects, tests and services commercial fire protection systems across the Denver metro area and the Front Range. Its own site states that it employs NICET-certified and ASIS-certified, factory-trained staff and operates UL-listed central station monitoring. Its fire alarm work extends to voice evacuation, mass notification, lift recall, area-of-refuge and two-way emergency communication systems. It offers a 24-hour emergency response.