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US5039009A Thermostat interface for a refrigeration system controller 失效
制冷系统控制器的温控器接口

Thermostat interface for a refrigeration system controller
摘要:
An interface for use between a thermostat and a controller for an HVAC system comprising: means for receiving a plurality of parallel commands from a thermostat where each command represents one of two possible states; means for coverting each of the plurality of parallel commands into a plurality of predetermined values; means for combining the predetermined values in a predetermined manner; and means for transmitting the combined predetermined values to the controller.
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