System Sensor Low Frequency Sounders EngSpec

Architects and Engineering Specification Advance Wall Low Frequency Sounder low frequency sounder appliance shall be System Sensor model The low frequency shall be listed to UL 464 and shall be approved for fire protective service The low frequency shall have an option to switch between a temporal three pattern non temporal continuous or pattern These options are set by a multiple position switch The low frequency sounder shall between 32 and 120 The appliance shall mount to a standard 4 4 1 back box 4 octagon back box double gang back box single gang or 2 4 17 back box A universal plate shall be used for mounting ceiling and wall products low frequency sounder 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 The notification appliance circuit wiring shall terminate at the mounting plate The low frequency sounder and the Sync MDL3 Module accessory if shall be powered from a notification appliance circuit output and shall operate on a nominal 12 or 24 includes fire alarm panels with built in sync When used with the Sync Module MDL3 12 volt notification appliance circuit outputs shall operate between 8.5 and 17.5 volts 24 volt rated appliance circuit outputs shall operate between 16.5 to 33 volts If the notification appliances not UL 9th edition listed with the corresponding panel or power supply being used then refer to the listing of the panel to determine maximum devices on a circuit notification appliances shall be backward compatible