| Business | Phone |
| Alarm & Protective Devices 8025 S Willow St, Manchester 3103 | (603) 432-6678 |
| American Alarm & Communication 649 E Industrial Park Dr # 9, Manchester 3109 | (603) 627-2002 |
| Capital Alarm Systems Inc 218 Blodget St, Manchester 3104 | (603) 622-4053 |
| Centra-Larm Monitoring 994 Candia Rd, Manchester 3109 | (603) 623-7930 |
| Day & Night Security Systems 216 Head St, Manchester 3102 | (603) 625-1515 |
| Electronic Security Protection 720 E Industrial Park Dr # 3, Manchester 3109 | (603) 624-0888 |
| J M Protective Svc 8030 S Willow St, Manchester 3103 | (603) 669-9195 |
| Krafton Security Systems 722 E Industrial Park Dr # 17, Manchester 3109 | (603) 669-7012 |