Architects and Engineering Specification Advance Low Frequency Sounder Strobe low frequency sounder strobe appliance shall be System Sensor model number _______. The low sounder strobe shall be listed to UL 1971 and UL 464 and shall be approved for fire protective The low frequency sounder strobe shall be wired as a primary-signaling notification appliance comply with the Americans with Disabilities Act requirements for visible signaling appliances, flashing 1Hz over the strobe entire operating voltage range. The strobe shall have field-selectable candela including 135, 150, 177, 185. The strobe light shall consist of a xenon flash tube and associated system. The low frequency sounder shall have an option to switch between a temporal and a non-temporal (continuous) pattern. These options are set by a multiple position switch. low frequency sounder on low frequency sounder/strobe models shall operate on a non-coded power The low frequency strobe shall operate between 32 and 120 low frequency sounder strobe shall mount to a standard 4 4 1 back box, 4-inch octagon box, double-gang back box or a single-gang or 2 4 17 back box. A universal mounting shall be used for mounting ceiling and wall products. The notification appliance circuit wiring shall at the universal mounting plate. low frequency sounder strobe and the Sync Module MDL3 accessory, if used, shall be from a non-coded notification appliance circuit output and shall operate on a nominal 24 volts fire alarm panels with built in sync). When used with the Sync Module MDL3, 24-volt notification appliance circuit outputs shall operate between 16.5 to 33 volts. If the notification are not UL 9th edition listed with the corresponding panel or power supply being used, then to the compatibility listing of the panel to determine maximum devices on a circuit. low frequency sounder strobe shall be plug-in and shall have the ability to check wiring continuity via a spring on the universal mounting plate. The shorting spring shall also provide tamper resistance an open circuit if the device is removed. notification appliances shall be backward compatible.