- Wheelock Exceder horn strobe - Horn Strobe ceiling mount white - Visible candela window with 8 selectable candela settings - Selectable 12 & 24 VDC - 3 Audible settings 90 95 99 dB (anechoic) - Voltage test points - Universal mounting base 1-gang 2-gang 4� square 3.5� octal 4� octal back boxes - Finger slide switches for audio and visual settings - Approvals: UL CSFM WHHSWC