The Siemens ABHW-4B Audible Detector Base P/N: S54320-F13-A1 is an intelligent supervised sounder base designed for compatible Siemens addressable fire detectors. It combines a standard detector mounting base with an integrated audible signaling device for localized fire and emergency notification.
The ABHW-4B supports both SLC loop-powered two-wire operation and externally powered operation. Siemens currently lists S54320-F13-A1 as an active product within its detector-base family.
Product Functions
- Provides an integrated audible detector base
- Supports compatible Siemens addressable detectors
- Intelligent and supervised operation
- Supports SLC loop-powered operation
- Supports external 24V power
- Provides six selectable audible patterns
- Provides two selectable volume levels
- Supports synchronized audible operation
- Supports Temporal 3 fire signaling
- Supports Temporal 4 CO signaling
- Supports remote alarm indicators
- Automatically recognizes compatible detector types
Integrated Audible Signaling
The ABHW-4B combines a detector base with an integral audible signaling device.
When used with compatible Siemens detectors and fire alarm control equipment, the sounder can be activated according to system programming. Multiple ABHW-4B bases on the same compatible device loop can operate in synchronization.
The base produces a standard high-frequency audible signal suitable for localized fire and emergency notification.
Six Selectable Tone Patterns
The ABHW-4B provides six configurable audible patterns:
Steady
March Time 120
Canadian March Time 30.
This allows the same base to support different fire and emergency signaling requirements through compatible system programming.
Temporal 3 & Temporal 4
The ABHW-4B supports both fire and carbon-monoxide signaling patterns.
Temporal 3: Common standardized fire evacuation pattern
Temporal 4: Carbon monoxide notification pattern
The availability of both patterns allows compatible systems to use the audible base for multiple emergency signaling functions.
Two Volume Levels
The audible base provides two programmable output levels:
High: approximately 85 dBA at 10 ft
Low: approximately 75 dBA at 10 ft
This allows the audible output to be configured according to the protected area’s requirements.
Loop-Powered Operation
A key feature of the ABHW-4B is its loop-power capability.
When used with compatible Siemens equipment, the base can receive operating power directly from the signaling line circuit, providing a two-wire arrangement without requiring a separate notification power circuit.
The base can alternatively operate from an external regulated 24VDC source when required by the system configuration.
Compatible Detectors
Siemens documents compatibility with H-Series and S-Series detectors including:
HFP-11 — Optical/Heat Detector
HFPT-11 — Heat Detector
HFPO-11 — Optical Detector
SFP-11 — Optical/Heat Detector
SFPT-11 — Heat Detector
SFPO-11 — Optical Detector.
Additional Siemens detector families may also be compatible depending on the control panel and system configuration.
Remote LED Support
The ABHW-4B supports compatible Siemens remote alarm indicators including:
RL-HC — Ceiling-mounted Remote Alarm Indicator
RL-HW — Wall-mounted Remote Alarm Indicator.
These accessories allow detector alarm indication to be displayed at another visible location when required.
Electrical & Audio Information
Model: ABHW-4B
Part Number: S54320-F13-A1
Product Type: Intelligent Audible Detector Base
External Power Range: 16–33 VDC
Power Options: SLC Loop / External 24VDC
Audible Patterns: 6
Volume Levels: 2
High Output: Approximately 85 dBA
Low Output: Approximately 75 dBA
Operating Temperature: 32°F to 120°F / 0°C to 49°C
Humidity: Up to 95% RH, non-condensing
Product Status: Active.



