Alarm Control Systems Inc. helps protect commercial and residential clients in Cambridge with its fire and security protection services. Its home security solutions cover burglary alarms; the detection of fire, smoke, and carbon monoxide levels; and a personal emergency response system (PERS). These also include 24-hour monitoring of the water, sump pump, freezer, and furnace conditions. Homeowners are given access to a remote video surveillance system to see what is happening in their homes wherever they are. Alarm Control Systems has been in the business since 1989.