Siemens SLHSWW-F — white wall horn-strobe with FIRE lettering, Siemens part number S54329-F22-A2.
The SL series moved Siemens notification to LED strobe optics, cutting NAC current enough that a retrofit floor can often be re-lamped without a new power supply. Since the strobe meets the 20 ms pulse-duration rule of NFPA 72 (2016), it may share a field of view with legacy Siemens xenon appliances instead of a whole-zone swap.
- Field-selectable 15 / 30 / 75 / 110 cd by slide adjustor
- 24 VDC/VFWR only, regulated range 16–33 V; Code 3 or continuous tone, high or low volume
- High-dB Code 3 current 34 / 46 / 105 / 214 mA; low-dB 32 / 42 / 102 / 213 mA
- UL 464 reverberant at 24 V, 10 ft: 79 dBA Code 3 high, 83 dBA continuous high
There is no 12 V version — only SLHW horn-only models run at 12 V. Strobe sync uses the Siemens proprietary protocol, so it needs a Siemens panel, PAD-series NAC extender or DSC module. Mounts to a single-gang SLSBBW backbox, or a 4" square box with the SLSGP-W adapter.