CEDIA ESPA EST Practice Test

Answer - C - PLC uses AC power lines to transmit lighting control system signals.

Key Takeaway: X10 is a Powerline Carrier, or PLC technology, that communicates between transmitters and receivers by sending and receiving signals over the power line wiring. These signals involve short RF bursts, which represent digital information. X10 power line carrier transmissions are synchronized to the zero crossing point of the AC power line.