| Business | Phone |
| Alarm Security Inc 2101 S Arlington Heights Rd, Arlington Heights 60005 | (847) 390-9341 |
| Ameriguard Security & Comms 1415 E Algonquin Rd, Arlington Heights 60005 | (847) 265-9500 |
| Fire & Security Systems Inc 724 E Kensington Rd, Arlington Heights 60004 | (847) 577-1950 |