| Business | Phone |
| Akita Security Co 110 Cidermill Ave #B1, Concord L4K 4L9 | (905) 738-2228 |
| Api Alarm Inc 30 Rayette Rd, Concord L4K 2G3 | (416) 661-5566 |
| Maxguard Alarms 210 Drumlin Cir #6, Concord L4K 3E4 | (905) 761-7321 |
| New Age Security Systems 2900 Langstaff Rd #15, Concord L4K 4R9 | (905) 660-7705 |
| Night Light Security Systems 23 Mccleary Crt, Concord L4K 3R6 | (905) 731-4783 |
| Royal Alarms Ltd 160 Applewood Cres, Concord L4K 4H2 | (905) 738-1596 |
| Executive Alarms Inc 527 Edgeley Blvd, Concord L4K 4G6 | (905) 738-5679 |