For over 30 years, Citadel Security Systems Inc. has been designing, installing, monitoring and servicing burglar and fire alarm systems throughout the United States. Based in Holland, Pa., the firm offers a wide range of residential products and services, including burglar alarm systems, fire alarm systems, long-range radio links, central station monitoring, structured wiring system, commercial fire alarm systems and many more. It specliazes in residential and commercial custom-designed alarm systems, designed according to the customer s requirements. Citadel Security Systems Inc. is an Underwriters Laboratories Inc. (UL) listed central station.