| Business | Phone |
| A Class Alarms & Security Syst 11 Valley Woods Rd, North York M3A 2R4 | (416) 391-1357 |
| Aaa Safe-Tech Alarm Systems 121 Willowdale Ave #202, North York M2N 6A3 | (416) 229-9902 |
| Ace Alarm Inc 130 Lepage Crt #30, North York M3J 3J1 | (416) 543-2500 |
| Adt Security Systems 73 Bridgeland Ave, North York M6A 1Y7 | (416) 784-0505 |
| Alarm Co 70 Clipper Rd #202, North York M2J 4E3 | (416) 490-9935 |
| Alarm Source Security Systems 601 Magnetic Dr #47, North York M3J 3J2 | (416) 665-9900 |
| Alarm Force Industries Inc 49 Coldwater Rd, North York M3B 1Y8 | (416) 445-2001 |
| Alarms Unlimited Inc 190 Clifton Ave #101, North York M3H 4L9 | (416) 633-5555 |
| Alarm King 71 Churchill Ave, North York M2N 1Y8 | (416) 225-9090 |
| Atp Security 469 Mcnicoll Ave, North York M2H 2C9 | (416) 756-1555 |
| Granite Security Systems 148 Willowdale Ave #200, North York M2N 4Y4 | (416) 520-7419 |
| Guard Security Systems Inc 170 The Donway W #105, North York M3C 2G3 | (416) 447-8449 |
| Guardtek Systems Inc 2901 Steeles Ave W #6, North York M3J 3A5 | (416) 736-7722 |
| H & L Alarm Systems 1140 Sheppard Ave W, North York M3K 2A2 | (416) 226-1161 |
| Hi-Tech Security Systems Inc 190 Clifton Ave, North York M3H 4L9 | (416) 398-7398 |
| Hitek Built-In Systems Inc 6020 Yonge St, North York M2M 3V9 | (416) 229-2330 |
| Home Protection Plus 3850 Chesswood Dr, North York M3J 2W6 | (416) 444-4663 |
| Icu Alarm & Security Ltd 1640 Lawrence Ave W, North York M6L 1C6 | (416) 486-9401 |
| E-G Transportation 900 Alness St, North York M3J 2H6 | (416) 736-6565 |
| Knight Watch Security & Alarms 37 Kodiak Cres, North York M3J 3E5 | (416) 398-7414 |
| Kocom 624 Wilson Ave, North York M3K 1E1 | (416) 769-3532 |
| Mark 1 Security Systems 58 Crossburn Dr, North York M3B 2Z2 | (416) 444-6404 |
| Baghai Security & Electronic 16 High Point Rd, North York M3B 2A4 | (416) 449-5992 |
| Onex Technology Systems Inc 1448 Lawrence Ave E, North York M4A 2S8 | (416) 466-7636 |
| Real Protection Svc 5 Bamber Crt, North York M3A 2N5 | (416) 447-1019 |
| Drt Distributing 1280 Finch Ave W, North York M3J 3K6 | (416) 650-1550 |
| Blaze Alarms 3307 Bayview Ave, North York M2K 1G4 | (416) 250-7398 |
| Securely Yours 3395 Bathurst St, North York M6A 2B8 | (416) 789-2931 |
| Security Direct Inc 100 Sheppard Ave E #430, North York M2N 6N5 | (416) 229-9275 |
| Security Systems Of Canada 750 Oakdale Rd, North York M3N 2Z4 | (416) 742-4303 |
| Superior Alarm Co Management 211 Consumers Rd, North York M2J 4G8 | (416) 494-2988 |
| Track One Systems 125 Wendell Ave #A, North York M9N 3K9 | (416) 244-9377 |
| Bowles Built In Systems 241 Cassandra Blvd, North York M3A 1V3 | (905) 763-1088 |
| C V Technic 6091 Yonge St, North York M2M 3W2 | (416) 223-5912 |
| Canada Alarms 1140 Sheppard Ave W #W15, North York M3K 2A2 | (416) 755-7600 |
| Classic Security Systems 3866 Chesswood Dr, North York M3J 2W6 | (416) 636-0068 |
| Counterforce Inc 1220 Sheppard Ave E, North York M2K 2S5 | (416) 467-9738 |
| Current Trends Electrical Cntr 40 Magnetic Dr #68, North York M3J 2C4 | (416) 665-4444 |
| D K Alarm Ltd 80 Sheppard Ave W #204, North York M2N 1M2 | (416) 223-7755 |
| Das Digital Alarm Systems 188 Doris Ave, North York M2N 6Z5 | (416) 495-9102 |
| Fidelity Security Systems 335 Lesmill Rd, North York M3B 2V1 | (416) 444-1029 |
| Fist Security Ltd 1648 Victoria Park Ave, North York M1R 1P7 | (416) 755-4233 |
| Focus Security Systems 2800 Keele St, North York M3M 2G3 | (416) 531-2781 |
| Forest Hill Security 190 Clifton Ave #102, North York M3H 4L9 | (416) 635-1980 |