Kyungki Systems Com-Guard 2301-0010 ISA Security Sensor Card SENS1 SENS2 Ports

Kyungki Systems Com-Guard 2301-0010 ISA Security Sensor Card SENS1 SENS2 Ports

The Kyungki Systems Com-Guard 2301-0010 is an ISA-bus expansion card designed to interface with external sensor inputs, designated SENS1 and SENS2. The board carries the silkscreen label COMGUARD-(IN) and includes a relay, multiple DIP-package ICs, and a set of bracket-mounted connectors for connecting sensor or security signal lines. This is a Korean-made card from the mid-to-late 1990s ISA era, intended for integration into ISA-slot desktop or industrial computers running security or building-automation monitoring software.

Specifications & What's Included

• Manufacturer: Kyungki Systems
• Model / Part Number: Com-Guard 2301-0010
• Board label: COMGUARD-(IN)
• Bus interface: ISA (Industry Standard Architecture), half-length card
• Sensor inputs: SENS1 and SENS2 (two dedicated sensor ports)
• Bracket connectors: RJ-style modular jacks and 3.5mm audio-style jacks for sensor wiring
• On-board relay (DV5-12 marked relay visible on PCB)
• Multiple DIP ICs and through-hole passive components on green PCB
• EMIC(B) compliance marking on board
• Korean regulatory label: 정보통신부-97-HTC-1629
• Country of manufacture: South Korea
• Card only — no software, cables, or documentation included

Applications

The Com-Guard line from Kyungki Systems was designed for sensor-based monitoring and security applications in Korean commercial and industrial markets during the 1990s. Cards like this were installed in ISA-slot PCs to receive signals from door contacts, motion sensors, fire/smoke detectors, or other binary-signal devices as part of a building security or access-control system. The ISA bus was the dominant PC expansion standard from the mid-1980s through the mid-1990s; by the late 1990s it was being replaced by PCI, making cards like this specific to that era of PC hardware. Today these cards are of interest to integrators maintaining legacy Korean security systems, industrial automation researchers, or collectors of late-ISA-era hardware.