1. Central Signal Corp
500 Market St Unit 2A, Portsmouth, NH 03801
Coordinate: 43.08194,-70.76296
Phone: (603) 431-8700
2. Eastern Sentinel Security
Portsmouth, NH 03801
Phone: (207) 676-9606
3. Adt
55 Congress St, Portsmouth, NH 03801
Coordinate: 43.0767,-70.75895
Phone: (603) 319-1975
4. Jr Seely Company
Coordinate: icon:https://i1.ypcdn.com/ypu/images/icons/map-pin.png|43.074883,-70.75967
Phone: Phone: (603) 427-8732