The SpectrAlert Advance PC2WHK is a white, two-wire, outdoor, ceiling-mount horn strobe with selectable high-candela strobe settings of 135, 150, 177 and 185 cd. Outdoor back box included.
The SpectrAlert Advance SPSWK-R (replacement model) is a white, outdoor speaker strobe for wall installation with selectable strobe settings of 15, 15/75, 30, 75, 95, 110 and 115 cd.