Vaddio's Power Extension Module (PEM) extends DC power on a single CAT-5e cable up to 100' (30.5m). Key Features: Extends DC on Cat. 5e for power extension up to 100' The Power Extension Module (PEM) will safely extend DC power to a compatible camera's EZ Power Video port for when power extension (but not video extension) are needed, or power the IR trim ring of an In-Ceiling Half-Recessed mount when the mounted camera or system does not include a 2-cable Quick-Connect.