Abstract: An interface device for the remote control of pulse activated, mechanically held relays or master switches by control devices which have a continuous output, such as time clocks, security system devices, and thermostats. The presence of a continuous input signal is decoded by the electronic circuitry into a momentary output signal to be applied to the "on" side of a remote control relay. When the input signal is removed, the device decodes this lack of signal and produces a momentary signal to be applied to the "off" coil of the relay. Input terminals are provided with four types of input signals -120 volts AC, 12 volts DC, a contact closure, and a contact opening. Three output terminals are provided, namely, "common," "on," and "off" terminals for connection to the remote control relays. Another set of terminals can be provided to allow the use of an external power supply load with the device, by incorporating a control relay within the device capable of handling 20 amps.

Abstract: A remote control wiring system is provided which includes a transformer for providing power to a low voltage subsystem which, through relays, controls the opening and closing of higher voltage load circuits of the remote control wiring system. A plurality of relays are provided, one for controlling each of the load circuits. A first circuit includes in series a first solid state switching device, such as a suitable transistor, SCR or triac, and a relay, or a plurality of relays connected in parallel. Similarly, a second circuit includes in series a second solid state switching device, such as a suitable transistor, SCR or triac, and the relay, or the plurality of relays connected in parallel. A two-position switch is incorporated in the low voltage subsystem in association with the first and second circuits.

Abstract: A dimmer of high wattage capacity is provided and incorporates as a component thereof a dimmer of lower wattage capacity. The combination of this invention makes possible a higher wattage dimmer at a relatively lower cost than previously feasible. This higher wattage dimmer incorporates in combination, a standard lower wattage dimmer, having a low cost based on high volume production, coupled with a relatively large heat sink. The heat sink is formed to combine with and bear against the lower wattage dimmer in heat receiving relationship. A lower cost higher wattage dimmer accordingly results from this combination.