DSC Links 1000 Cellular Alarm Transmitter SG Security Communications RJ31X

DSC Links 1000 Cellular Alarm Transmitter SG Security Communications RJ31X

The DSC Links 1000 is a cellular alarm transmitter manufactured by SG Security Communications, a division of Sur-Gard Security Systems Ltd. It is designed to transmit alarm signals from a security panel over a cellular network, providing a wireless backup or primary communication path when a traditional phone line is unavailable or has been cut. The unit is housed in a lockable wall-mount metal enclosure suitable for installation in a security closet or utility room.

Specifications & What's Included

• Model: Links 1000
• Manufacturer: SG Security Communications (A Division of Sur-Gard Security Systems Ltd.) — Made in Canada
• FCC Registration No.: F53CAN-74349-KX-N
• FCC ID: F53LINKS1
• Plug Type: RJ31X
• REN: 0.0B
• DOC/MDC: 160 182 168C; LN/IC: 10
• FCC Compliance: Parts 15 and 68
• Antenna connector: BNC (top-mounted on enclosure)
• Enclosure: Lockable wall-mount metal cabinet
• Internal PCB assembly with heatsinks, terminal block strip, and onboard components present
• Sold as-is — no power supply, antenna, or additional accessories confirmed included

Applications

Cellular alarm communicators like the Links 1000 were used in commercial and residential security installations as an alternative to standard POTS (plain old telephone service) dialer communication. They connect between the alarm control panel and the cellular network, transmitting alarm events — intrusion, fire, supervisory — to a central monitoring station. The RJ31X interface is the standard telephone interface used in North American alarm installations to seize the phone line before dialing. Sur-Gard / SG Security Communications was a well-known Canadian manufacturer of alarm communication products in the 1990s and early 2000s, and the Links 1000 was aimed at installations where phone-line reliability was a concern or where a wireless path was preferred. This type of device became common as traditional POTS infrastructure aged and carriers began phasing out copper lines. Units like this are now primarily sought for parts, repair, legacy system support, or reference/study purposes.