ADEMCO Vista PLC connection to PSC04 Application: The security system transmits X10 signals directly to AC power line via the PSC04.  Benefit: Alarm conditions can control lighting. ADEMCO 1361X10 Powerline Transformer Application: The security system transmits X10 signals directly to AC power line using the power brick. Benefit: Alarm conditions can control lighting, only one connection to alarm panel from power brick