Check the listing for details. Furman PS-REL Automatic AC Relay. Condition: New. Listed at 52.13 USD. For home theaters and similar sized installations, the PS-REL AC Relay provides an alternative, easy way of closing switch contacts. A single box containing a smart relay, it functions as a sensor to detect the presence of AC power and close relay contacts that are wired to a terminal strip in response. Additionally, PS-REL is useful in determining when a certain outlet has come on after a sequenced delay, extending that outlet's capacity. It may also be used to extend the capacity of the switched outlet found on many home theater receiver/amps or used with any Furman products related to the RS-1.Applications Designed for use with the PS-8R 15 amp Power Sequencer, the PS-PRO 20 amp Power Sequencer, the PowerPort 20 amp Remote AC Controller, the MiniPort-30 Power Relay (30 amps), MiniPort-20 Power Relay (rated 20 amps), and the MiniPort-15 Power Relay (rated 15 amps) Needed whenever a PS-8R, PS-PRO, PowerPort or MiniPort (or linked chain of PowerPorts or MiniPorts) must be turned on in response to energizing a switched outlet.FeaturesSmall box containing a single relayFunctions as a sensor, closing a switch in response to the presence of AC powerAllows multiple 15-amp and 20-amp circuits to be controlled from one device