Overview
PK5500 full-message LCD and RFK5500/RFK5564/RFK5516 variants add 64-zone status, programming access, and optional 433 MHz wireless receiver on Keybus PowerSeries panels.
Panel bus / link type
Keybus (PowerSeries)
At a Glance
| Detail | Value |
|---|---|
| Product type | Alarm keypad / operator interface |
| Model family (PK5500, RFK5500, RFK5564, RFK5516) | See label and install manual |
| Bus / wireless link | Keybus (PowerSeries) |
| Primary manual | PK5500 Installation Manual v1.3; RFK5516 Installation Manual |
| Region / listing notes | 433 MHz RF variants — confirm regional frequency on label |
Before You Install or Replace One
- Confirm exact model number on the keypad label matches the install manual.
- Verify host panel family — Keybus PowerSeries, Neo Corbus, MAXSYS Combus, and IMPASSA wireless are not interchangeable.
- Plan unique keypad address or wireless enrollment — duplicates cause bus collisions or offline devices.
- Check partition assignment (global vs partition keypad) for multi-partition sites.
- Include keypad current draw in panel AUX / Corbus / battery standby calculations.
Official Sources
- Product page: DSC PowerSeries 64-Zone LCD Picture Icon Keypad (ID 1280)
- PK5500 Installation Manual v1.3; RFK5516 Installation Manual — DSC official documentation
Troubleshooting
Start with host panel family, then keypad model, then bus vs wireless link.
Quick diagnostic flow
- Confirm keypad model matches PK5500 Installation Manual v1.3; RFK5516 Installation Manual.
- Verify host panel is on the supported list in compatible-peripherals.md.
- Check power: panel AC/battery healthy before blaming keypad.
- Read troubles at keypad with **
[*, 2]** or trouble LED. - Verify address / enrollment — wired:
[013]Keybus or[902]Corbus; wireless: enroll window and transceiver online. - Test with known-good user code on assigned partition.
Wiring / bus
- Keybus: homerun, polarity, termination; one bad keypad can drag bus if shorted.
- Corbus/Combus: homerun from panel module; check AUX/Corbus voltage under load.
- Wireless: battery, range, antenna, transceiver supervision on panel first.
PK5500 / RFK service
- Assign unique keypad address at section
[013]— duplicate addresses cause bus collisions. - RFK models: enroll wireless devices after keypad receiver is online.
- Full-message LCD supports installer programming; fixed LED models have limited programming menus.
PK5500 manual programming
- Keypad address at section
[013]— duplicates cause blank display or bus errors. - RFK: enroll wireless after keypad receiver online (75 mA standby / 135 mA max draw).
- UL fire: RFK within 3 ft of panel or add second listed keypad per manual note.
After keypad replacement
Re-assign address, partition visibility, and user PINs per manual — new keypad does not inherit old device programming automatically.
Source: PK5500 Installation Manual v1.3; RFK5516 Installation Manual; host panel installation guide keypad sections.