1. Guardian Protection Services
20 N Main St, Lombard, IL 60148
Coordinate: 41.88768,-88.01837
Phone: (630) 693-9903
2. Allied Central Security
42 N Columbine Ave, Lombard, IL 60148
Coordinate: 41.88965,-88.03432
Phone: (630) 495-3662
3. Best Access Systems
Coordinate: icon:https://i1.ypcdn.com/ypu/images/icons/map-pin.png|41.850243,-88.03184
Phone: Phone: (866) 298-5398