The SCA-5070INT is a small form single channel 50W amplifier that can be mounted in the IPA-4000V, AFC-1000V, LOC- 1000 and PSN-1000E. The amplifier is mounted to an exclusive stacker bracket for secure and accessible mounting. The SCA-5070INT provides 4 Class B or 4 Class A speaker circuits. The SCA-5070INT communicates via the P-Link communication bus and audio is distributed through the V-Link 1 audio riser. The amplifier is powered by a constant 24VDC provided by the fire panel or PSN-1000 NAC circuit. The SCA-5070INT can support either 25V or 70V speaker circuits. The speaker circuit voltage is set using the panel programming software. The IPA-4000V supports up to thirty-one (31) amplifiers and the AFC-1000V supports up to 10 amplifiers. All circuits are power-limited and supervised.