1. Viscom Systems 98 Galen St, Watertown, MA 02472 Coordinate: 42.36214,-71.18546 Phone: (617) 864-3676
2. Alden Lock & Security, Inc. 1053 Belmont St, Watertown, MA 02472 Coordinate: 42.38258,-71.19698 Phone: (617) 484-2239