Overview
MAXSYS access control kits bundle PC4820 door control, PC4850 card access, readers, credentials, and related Combus modules for PC4020-based integrated intrusion + access installs. Access shares the same panel, partitions, user codes (up to 1,500), and 64 access levels as burglary—doors can be shunted, scheduled, and reported through the same communicator.
End-user benefits highlighted in DSC's MAXSYS end-user guide:
- Seamless integration — One system monitors who enters and when, tied to intrusion partitions.
- Simple operation — LCD keypads with programmable function keys; one-button arming shortcuts.
- Rugged reliability — Industry-leading lightning and static protection on MAXSYS panels.
- False alarm reduction — Panel features reduce nuisance alarms on commercial sites.
- IP reporting — T-Link TL-250/TL-300 uses existing LAN paths with AES encryption options.
Typical targets: middle-market retailers, schools, government buildings, industrial complexes, financial institutions, and high-end multi-unit residential.
At a Glance
| Component | Role |
|---|---|
| PC4020 host | Intrusion + access logic, Combus, communicator |
| PC4820 | Door control modules (up to 16 on system) |
| PC4850 | Card access control modules (up to 16) |
| User codes | 1,500 codes; assign to access levels and partitions |
| Automation | PC4401 DataLink optional for building automation tie-in |
Before You Deploy a Kit
- Confirm door count, reader type, and fail-safe vs fail-secure hardware per door.
- Plan Combus addresses for PC4820/PC4850 alongside zone and output modules.
- Program access levels, time zones, and anti-passback rules in DLS—not at the keypad alone.
- Verify fire release and unlock on AC loss requirements with local code.
Official Sources
- Product page: DSC MAXSYS Access Control Kit (ID 24)
- 30-214 MAXSYS End-user Cheat Sheet; MAXSYS 12-page brochure — DSC official documentation
- PC4020 v3.5 Installation Manual and PC4820/PC4850 module install sheets
FAQs
What is included in a MAXSYS access control kit?
DSC kits bundle PC4820 door modules, PC4850 reader interfaces, credentials, and related hardware for PC4020-based integrated access—exact contents vary by kit SKU on the product page.
Does access use the same user codes as burglary?
Yes—up to 1,500 user codes assign to partitions and 64 access levels on the same PC4020.
Can I add access to an existing PC4020 intrusion system?
Yes, if Combus capacity and power budget allow enrolling additional PC4820/PC4850 modules—plan addresses and DLS programming.
How does IP reporting work with access events?
T-Link TL-250/TL-300 modules report access and intrusion events over the customer's LAN—program reporting codes for door events in DLS.
Where is the end-user guide?
DSC 30-214 MAXSYS End-user Cheat Sheet summarizes function keys, Exit button, and emergency keys for building occupants.