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DSC PC4020NK MAXSYS 16-128 zone control panel with cabinet

Quick Overview
DSC-PC4020NK MAXSYS 16-128 zone control panel with cabinet The DSC-PC4020NK MAXSYS is a 16 zone alarm system that can be expanded up to 128 zones with expansion boards. This system...


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DSC-PC4020NK MAXSYS 16-128 zone control panel with cabinet

The DSC-PC4020NK MAXSYS is a 16 zone alarm system that can be expanded up to 128 zones with expansion boards. This system is for larger homes or, ideally, for commercial uses in businesses. The MAXSYS line was intended for commercial applications that would require having a system with access control, security, and automation all bundled into one convenient package.

Not only can you connect hard-wired devices into this system, but you can add wireless functionality to it also through adding a 64 zone wireless receiver. The MAXSYS is powerful and, besides having enough room to add a good amount of hard-wired and wireless devices, can be partitioned out to a whopping 8 partitions. This means that you can make certain parts of your location their own seperate arming/disarming areas.

You can also have up to 1,500 user/card codes which definitely puts this in the commercial class of systems. Manage the coming and going of your employees and assign them any of the 64 user access levels if they need different clearance levels.

All in all the PC4020 has what you're looking for if you need to secure your commercial building!

NOTE: This item is intended for installers who understand the function and application of this product. We do not offer technical support for this product.


  • bell output? 12VDC, 700mA max. continuous
    • up to 2A for 4 minutes using battery assist.
    • PTC over current protected ? self-restoring.
  • AUX+ output? 12VDC, 500mA max.
  • SAUX+ output? 12VDC, 300mA max.
  • SAUX+ output is normally +12VDC and power is removed upon activation. Typically used to reset 4-wire smoke detectors. Note? total for AUX+ output and SAUX+ output is 500mA max. e.g. If the SAUX+ output is loaded to 200mA then only 300mA remains for the AUX+ output.
  • AUX+ and SAUX+ outputs protected by a common PTC over current device which is self-restoring.
  • PGM outputs :
    • as standard PGM outputs? 12VDC, 50mA max. each.
    • PGM outputs are normally unpowered and switch to +12VDC upon activation. as addressable outputs? 12VDC, 170mA max. each
    • Note? PGM outputs are individually programmable as addressable loops or as general purpose PGM outputs.
  • Combus? 500mA max. from the PC4020 main panel additional power is provided by PC4204 modules. Maximum Combus capacitance is 80nF which is typically 4,000feet (1,219m) of 22AWG wire. Consult wire manufacturer for specifications of wire to be used.
  • Note? total loading for the Bell output, AUX+, SAUX+, PGM1, PGM2 and the Combus must not exceed 900mA. This limit may be exceeded by bell output if extra current required is drawn from the battery.
  • battery charger? up to 350mA to charge 12volt lead-acid batteries
    • up to 14Ah capacity. Battery charger is supervised for opens and is protected by PTC over current device which is self-restoring.
  • input power? 16VAC, 40VA
  • ground fault detection? built-in and enabled by connecting earth
  • ground to EGND terminal


16 zones on main control panel
Supports up to 16 hardwired keypads
Expandable up to 128 zones using hardwire, wireless modules and addressable zones
COMBUS hardwired expansion
8 partitions
1,500 user codes (4 or 6 digit)
3,000-event buffer
9 account and 3 phone numbers
1 supervised bell zone
Built-in telephone line and siren supervision
Auto SIA and Contact ID formats
Supports GSM and T-Link? alarm communicators
Full upload/download support with DLS download software
Approval Listings: European CE Directives (EMC, R&TTE, LVD), INCERT (Belgium), FCC/IC, UL/ULC

Extended Information