| 摘要 |
An electronic system for controlling an evaporative cooler (101) away from the location of a wall-mounted control switch (301). A remotely triggered high/low module (302) is installed in a roof-mounted electrical disconnect box (114). The existing wall-mounted manually operated control switch (117) is replaced with a new control switch (301) which contains a pump selection switch (304), a fan motor selection switch (305), and a remotely triggered on/off module (303). A variety of remote control devices can then be used to control the evaporative cooler (101), such as a PLC time-clock (501), an RF keychain remote (601) and PLC transceiver (701), a PLC thermostat (801), a PLC setback thermostat (901), a PLC telephone transponder (1001), or a computer interface (1101).
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