The electronic Multi-Alert™ sounder and the signaling strobe are intended to be connected to the alarm indicating circuit of a listed fire alarm control panel. Both are compatible with DC line supervision. The System Sensor MA12/24D-ALERT is suitable for connection to either a 12 or 24-volt panel.
The System Sensor MA12/24D-ALERT sounder and MASS12/24 sounder/strobes are suitable for outdoor applications (–35°C to 66°C) when used with a Weatherproof Back Box (Model WBB) as tested by UL. In Canada, rigid steel conduit must be used when installing the Weatherproof Back Box. The light output of the SS12LO, SS24LO, MASS12LO, and MASS24LO is 1.5 cd min @100% viewing angle. The light output of the SS24M, MASS12M, and MASS24M is 15 cd min @100% viewing angle.
There are eight different sounds that can be selected on the electronic sounder by adding or removing tab clips (see Figure 4). The sound selected will determine the maximum current and sound power output per device. Besides, under no circumstances can the SS24 or MASS24 input voltage exceed 33 VDC or be less than 18 VDC. Also, under no circumstances can the SS12 or MASS12 input voltage exceed 18.7 VDC or be less than 9.6 VDC. Under no circumstances can the MA12/24D input voltage exceed 33 VDC or be less than 9.6 VDC.
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