TRANSMISSION SYNCHRONIZED TO ZERO CROSSING PCC Transmitters are powered by standard AC power and transmit digitally encoded 120 kHz signal bursts onto the existing electrical wiring. These signals are synchronized to zero crossing of the power supply to which the transmitter is connected. Transmission at this point has the advantage of avoiding noise spikes generated by other equipment which generally do not cause noise near the zero crossing. The signal is transmitted three times at 0, 60, and 120 degrees referenced to the zero crossing to which the device draws its power, this coincides with the phase to neutral zero crossing points of all phases of a three phase system. 1 MILLISECOND BURST OF 120 KHz SIGNAL FROM TRANSMITTER SENT AT 0 DEGREES 60 AND 120 DEGREES TO CONTROL RECEIVERS ON ANY PHASE   COMPONENT APPLICATION ACT designed its PCC components for quick and easy installation, both in new construction and retrofit of existing buildings. Transmitters can be wired directly to circuit conductors and mounted in single gang wall boxes or located at distribution boards. Switch receivers can replace standard flush switches in their wall boxes or mounting brackets. Master receivers can be located adjacent to lighting fittings and a rocker type wall switch can be used for manual on/off operation of the receiver. Fixture receivers can be located in light fittings and standard receivers can be located at distribution boards. The key to PCC's versatility is its modular design which enables a complete manual system to be changed to an economic automatic control system with minimal wiring changes.   RETROFIT WITHOUT DISRUPTION OF OPERATIONS AND FLEXIBLE SCOPE OF CONTROL Normal operations can continue while the PCC modules are being installed. ACT's Powerline Control Components design makes it unnecessary to run dedicated lines from controllers or transmitters to every control point. Likewise several transmitters can be installed in a single facility and not interfere with one another. As there are no dedicated lines to each control point, fixed control groups for offices, common areas and task lighting can be set up, expanded, or altered without rewiring or redesign of existing AC electric systems. Two-way, intermediate, or higher-level switching can be established without the addition of complex wiring. Considering TIME, COST and SIMPLICITY of installation, no other control components come close to PCC flexibility and cost effectiveness.   WHERE DO PCC INSTALLATIONS INCREASE OPERATING CONVENIENCE AND DECREASE OPERATING COSTS? In facilities such as: For use in controlling: Schools & Universities Grocery Stores Parks & Golf Courses Fast Food Restaurants Banks Nurseries Government Buildings Shopping Malls & Stores Theaters & Auditoriums Prisons Hotel and Motels Automobile Dealerships Apartment Complexes Factories Hospitals Military Installations Office Complexes Museums Churches Nursing Homes Indoor & Outdoor Lighting Multiple Building Automation System Points Landscape Lighting Thru-the-wall or Window Air Conditioners Swimming Pool Lights, Pumps, and Heaters Athletic Field Lights Fan Coil Units De-icing Equipment Exhaust and Ceiling Fans Heat Pumps Signal/Directional Lighting Control of Emergency Generator Lighting Loads Water Heaters Drinking Fountains Vending Machine Lights Wall Outlets Powering Copy Machines Heating and Ventilating Equipment Sign Lighting Air Conditioning Remote Bell Signalling Tennis Court Lights Fountain Lights & Pumps Security Systems Remote Operation of Security Doors   TYPICAL CONNECTION DIAGRAM