Overview
2-way wireless indoor siren — 433 MHz supervised sounder with bidirectional link on IMPASSA/Alexor/PowerSeries wireless.
Product type
Siren / sounder
At a glance
| Detail | Value |
|---|---|
| Category | Siren / sounder |
| Primary manual | 2-Way Wireless Indoor Siren Installation Manual |
| Install scope | Premises panel or bus device |
| Supervision | Panel trouble display when faulted |
What this device does in the system
Provides audible/visual alarm annunciation when the panel enters alarm — must be enrolled and supervised like any other wireless or bus device.
Before you install or replace one
- Confirm exact model number on the label matches the install manual.
- Verify host panel or system family — Keybus, Corbus, Combus, PowerG, MX, or 433 MHz are not interchangeable.
- Check device limits on the panel/receiver before adding zones, sirens, or credentials.
- Include current draw in power budget calculations for modules, receivers, and keypads.
- For wireless: test RF at the mounted location, not only on the bench.
Official sources
- Product page: DSC 2-Way Wireless Indoor Siren (ID 127)
- 2-Way Wireless Indoor Siren Installation Manual — DSC official documentation
Compatible Peripherals
This page lists which panels and systems this product works with — not unrelated sensors or keypads.
Host compatibility
| Host system | How it connects |
|---|---|
| IMPASSA SCW9047/WT | 433 MHz siren enrollment |
| Alexor PC9155 | Enroll after keypad in [804] sequence |
| PowerSeries with RF5132/RFK | 433 MHz siren enrollment |
Not compatible / common mistakes
- PowerG-only systems without 433 MHz receiver
Replacement guidance
- Match model, frequency, and bus type to the removed device.
- Re-enroll wireless devices after replacement — ESN/serial changes with new hardware.
- Document zone/siren/device number for monitoring station handoff.
Source: 2-Way Wireless Indoor Siren Installation Manual (DSC official documentation).