X10 Pro One-Way Powerline Interface PSC04/PL513 The PSC04 Power Line Interface is a cost effective ways of coupling X-10 compatible signals onto the AC power line. Permission to transmit X-10 codes is granted to purchasers of the PSC04 Power Line Interfaces. The PSC04 is a transmitter only (One-Way) which plugs into a regular AC outlet and connects via a modular RJ11 telephone jack