The COOPER-WHEELOCK-HSW is a white horn strobe designed for wall mount installtion. The unit features a sleek modern design that will please building owners with reduced total cost of ownership. The HSW incorporates high reliability and high efficiency optics to minimize current draw allowing for a greater number of appliances on the notification appliance circuit. The horn strobe features an industry first of 8 candela settings on a single appliance. The unit has an audible that features 3 sound settings (90, 95, 99 dB). All switches to change settings, can be set without the use of a tool and are located behind the appliance to prevent tampering.Installers will benefit from the HSW comprehensive feature list, including the most candela options in one appliance, low current draw, no tools needed for setting changes, voltage test points, 12/24 VDC operation, universal mounting base and multiple mounting options for both new and retrofit construction. Also known as -Bosch W-HSW Wall-Mount Multi-Candela Horn Strobe (Two-Wire, 12/24 V, White) - Wh