Open-Area Alarm Devices 55000-001

A nominal sound output of 100 dB (A) is achieved at a current consumption of 5 mA in the case of the sounder and 8 mA for the sounder Visual indicator. Many control panels will be able to drive up to 20 sounders and up to 15 sounder Visual indicators per loop on average. However, the maximum number of devices that may be connected to a particular loop should be determined by a loop loading calculation using the Apollo Loop Calculator, which is available as a free download from www.apollo-fire.co.uk/loop calc. Since the Open-Area Alarm Devices are intended for use in open areas it is possible for more than one device to be audible at any given point in a building For this reason the operation of all may be synchronised by the control panel. The devices can be assigned either group or individual group addresses so that the functional options of the sounder are identical with those of the Sounder Control Unit, Part No. 55000-182.