Chesco Security is a family-owned company that has installed and serviced fire alarm and security systems since 1982 for commercial and residential clients. It has NICET-certified staff and monitors systems through a UL-listed central station, 365 days a year. The firm is based in Avondale, Pennsylvania and serves south-eastern Pennsylvania, Delaware, southern New Jersey and north-eastern Maryland. It holds a Delaware State Fire Marshal fire alarm signaling system company licence (Class I).