The SpectrAlert Advance SWHK-P is an unmarked, white, outdoor strobe with selectable high-candela strobe settings of 135, 150, 177 and 185 cd. Outdoor back box included.
The SpectrAlert Advance WTP is a red weatherproof mounting plate for flush mounting outdoor K series horns and horn strobes. Especially for use with SpectrAlert Advance replacement outdoor models