Overview
TL255 (Ethernet) and 3G2055 / TL2553G (3G) are alternate communicators for IMPASSA SCW9055/9057 self-contained systems. They integrate inside IMPASSA I, D, or G model configurations.
Reporting path
Ethernet and/or 3G cellular (IMPASSA I/D/G variants)
At a Glance
| Detail | Value |
|---|
| Product type | Alarm communicator / reporting module |
|---|
| Model family (TL255, 3G2055, TL2553G) | See label and install manual |
|---|
| Reporting path | Ethernet and/or 3G cellular (IMPASSA I/D/G variants) |
|---|
| Primary manual | TL255 Install Manual; 3G2055 v3.0 Installation Manual |
|---|
| Region / listing notes | 433 MHz IMPASSA — match communicator to SCW9055/57 letter suffix (I/D/G) |
|---|
Before You Install or Replace One
- Confirm exact model number on the communicator label matches the install manual.
- Verify host panel family — Keybus PowerSeries, Neo Corbus, MAXSYS Combus, IMPASSA integrated, or universal dialer-capture are not interchangeable.
- Confirm monitoring receiver and account accept this communicator format (Contact ID, SIA, IP, cellular).
- Check carrier/network generation (3G sunset, LTE band, Ethernet path) for your region.
- Add communicator current draw to panel battery standby calculation where the module loads from panel bus power.
Official Sources
- Product page: DSC HSPA Cellular Alarm Communicator (ID 1389)
- TL255 Install Manual; 3G2055 v3.0 Installation Manual — DSC official documentation
Installation Notes
Follow TL255 Install Manual; 3G2055 v3.0 Installation Manual for wiring, mounting, enrollment, and receiver programming. Summary below — not a substitute for the full manual.
Pre-install checklist
- Match communicator SKU to host panel family (see compatible-peripherals.md).
- Plan mounting location — metal cabinets, underground rooms, and long coax runs affect cellular/IP performance.
- Reserve panel bus power or external power per manual; update battery calculation chart.
- Confirm monitoring account and receiver are provisioned before final test.
Typical install sequence
- Mount communicator (or PCL-422 remote mount if used) per manual clearances.
- Wire power and data: Corbus/Keybus homerun, dialer Tip/Ring, or Ethernet as applicable.
- Enroll module in panel programming (Neo/Pro
[902], PowerSeries alt-comms section, IMPASSA[382]/[401]as applicable).
- Program reporting codes, account, and path priority (primary/backup for dual-path).
- Register with central station / Alarm.com / T-Link receiver.
- Run end-to-end communication test and document signal levels.
Regional notes
433 MHz IMPASSA — match communicator to SCW9055/57 letter suffix (I/D/G)
Source: TL255 Install Manual; 3G2055 v3.0 Installation Manual (DSC official documentation).