DSC PC4204 4-Relay Output Combus Module MAXSYS

The DSC PC4204 is a MAXSYS-series Power Supply and Relay Output Module designed to expand the output capacity of DSC MAXSYS security control panels. It delivers four fully programmable, high-current Form 'C' relay outputs rated at 2 Amps at 30 VDC, enabling integration with a wide range of external devices such as sirens, door locks, lighting, and HVAC equipment. The module connects to the panel via the 4-wire Combus and can also serve as a Combus repeater to extend system reach. Supervision is built in, covering AC failure, low battery, and auxiliary power failure conditions. Up to 16 PC4204 modules can be connected per system, enabling a maximum of 64 relay outputs. The PC4204 is listed under multiple UL and ULC standards, making it suitable for commercial burglar alarm and fire warning installations.

Key features & benefits

• 4 Programmable Form 'C' Relay Outputs — Each of the four relays is fully programmable and rated at 2 Amps at 30 VDC, providing high-current switching capability for a wide range of externally powered devices and actuators.
• Full System Supervision — The PC4204 is fully supervised for AC power failure, low battery, and auxiliary output failure, ensuring alarm monitoring integrity is maintained at all times.
• Scalable MAXSYS Expansion — Up to 16 Modules Per System — Up to 16 PC4204 modules can be connected on a single MAXSYS system, enabling up to 64 programmable relay outputs for large commercial and enterprise installations.
• Combus Connectivity and Repeater Capability — The module uses DSC's standard 4-wire Combus (RED, BLK, YEL, GRN) for power and data communication with the host panel, and can function as a Combus repeater to extend wiring distances in larger installations.
• Multiple UL and ULC Certifications — Listed under UL864, UL1610, UL609, UL365, UL985, UL1023, ULC-S527, and ULC-S302, the PC4204 is approved for use in commercial central station, local, police station, and household burglar and fire alarm installations.
• Auxiliary Power Output with Battery Charging (PC4204CF Variant) — The PC4204CF variant includes a 350mA battery charger, a 16VAC 40VA transformer, and space for two 7Ah batteries, adding on-board standby power for installations requiring it.