The connection half-power device or the connected circuit is prevented from being short-circuited by the humidity, and the moisture content is detected and the fan switch is operated to make the temperature and humidity appropriate level system operation state. Temperature and humidity control function, and a method of controlling temperature and humidity of a connection panel using the same. The temperature and humidity controllable connection half system of the present invention is installed inside a connection half and includes a control unit as a computing device; A sensor unit including at least one air temperature sensor, at least one heat sensor, at least one humidity sensor to measure an air temperature, a humidity, and an exothermic temperature of the connection half component in the connection half; A blowing unit capable of discharging the inside air to the outside or drawing outside air into the inside; And visibly provide the status of the access panel system to the user and also includes an interface through which the user can operate the access panel system to adjust the temperature and humidity inside the connection panel.
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