Overview
WT5500 2-way wire-free keypads are the primary operator interface for IMPASSA SCW9055/9057 self-contained systems — not Keybus or Neo Corbus devices.
Panel bus / link type
IMPASSA integrated wireless
At a Glance
| Detail | Value |
|---|---|
| Product type | Alarm keypad / operator interface |
| Model family (WT5500, WT5500P, WT5500-433) | See label and install manual |
| Bus / wireless link | IMPASSA integrated wireless |
| Primary manual | WT5500 Installation Manual v1.1 |
| Region / listing notes | 433 MHz IMPASSA — up to 4 WT5500 keypads per system |
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 2-Way Wire-Free Keypad (ID 60)
- WT5500 Installation Manual v1.1 — DSC official documentation
Error Codes
Keypad and panel troubles display on this device using **[*, 2] (where supported) or dedicated trouble LEDs. Use the host panel install manual** for full trouble lists — below covers common keypad-specific symptoms.
Common keypad / operator faults
| Display / symptom | Meaning | First checks |
|---|---|---|
| Blank / dead display | No power or bus communication | AC, battery, bus wiring, keypad address, fuse |
| Keypad Tamper | Enclosure opened or tamper switch | Mounting plate, tamper jumper, cover fit |
| Cannot Arm / Not Ready | Open zones or active troubles | [*, 2] trouble scroll; close zones; clear troubles |
| Invalid Code / Access Denied | Wrong user code or authority level | User [5] programming; verify partition assignment |
| WT5500 / WTK Offline | Wireless keypad lost link | Range, enrollment, panel wireless reset, battery |
| Cannot Enter Programming | Keypad lacks installer authority | Installer code [*, 8]; partition/global assignment |
WT5500 wire-free keypad
| Condition | Fix |
|---|---|
| Keypad not enrolled | Power-cycle panel; enroll within 2-minute startup window |
| Keypad offline | Battery, range, max 4 WT5500 limit |
| Wrong partition shown | WT5500 partition assignment in [382] programming |
WT5500 wireless keypad
| Display / LED | Meaning |
|---|---|
| Keypad offline | Battery, range, max 4 WT5500 exceeded |
| Not enrolled | Missed 2-minute power-up window |
| Trouble scroll | [*, 2] — panel AC, battery, communicator |
WT5500P: prox tamper separate from keypad tamper.
Panel trouble reference
Keypads display panel-level troubles (AC loss, FTC, zone faults) — fix the underlying circuit or device, not the keypad, when [*, 2] points to panel/comms/zone issues.
Source: WT5500 Installation Manual v1.1; host panel user/install manual trouble sections.
| Code | Meaning | Suggested Fix |
|---|---|---|
| Blank / dead display | No power or bus communication | AC, battery, bus wiring, keypad address, fuse |
| Keypad Tamper | Enclosure opened or tamper switch | Mounting plate, tamper jumper, cover fit |
| Cannot Arm / Not Ready | Open zones or active troubles | `[*, 2]` trouble scroll; close zones; clear troubles |
| Invalid Code / Access Denied | Wrong user code or authority level | User `[5]` programming; verify partition assignment |
| WT5500 / WTK Offline | Wireless keypad lost link | Range, enrollment, panel wireless reset, battery |
| Cannot Enter Programming | Keypad lacks installer authority | Installer code `[*, 8]`; partition/global assignment |
| Condition | Fix | |
| Keypad not enrolled | Power-cycle panel; enroll within 2-minute startup window | |
| Keypad offline | Battery, range, max 4 WT5500 limit | |
| Wrong partition shown | WT5500 partition assignment in `[382]` programming | |
| Display / LED | Meaning | |
| Keypad offline | Battery, range, max 4 WT5500 exceeded | |
| Not enrolled | Missed 2-minute power-up window | |
| Trouble scroll | `[*, 2]` — panel AC, battery, communicator |