The SpectrAlert Advance P2WK-P is an unmarked, white, two-wire, outdoor horn strobe with selectable strobe settings of 15, 15/75, 30, 75, 95, 110 and 115 cd. Outdoor back box included.
This unique and patented device has been helping stop false fire alarms around the world for more than 25 years, without restricting legitimate alarms.