Provided is a multi-machine centralized control device capable of centrally controlling an electric ventilating apparatus and capable of individually and selectively controlling the opening and closing of the apparatus. The electric power lines 5 connecting the electric motors 3 of the plurality of electric ventilation ventilators installed in each of the greenhouses (such as vinyl houses) and the power transformer panel 2 are independent wirings for the respective electric motors 3. Each power line 5 is connected to each motor 3 through a corresponding opening / closing switch 40 of the switchboard 4 having an independent terminal for each motor 3, and each switch 40 of the switchboard 4 is connected to each power line 5. Set the operating conditions according to the opening and closing conditions required for each applicable electric ventilation ventilation device in advance, turn on and off the power transformer panel 2 through the control panel 1, individually selected and set the electric ventilation ventilation Equipment electric 3 ... the opening and closing operations. [Selection] Figure 1【課題】電動式通風換気装置を一括集中的に制御することが可能で、同装置の開閉制御を個別的、選択的に行える多機集中管理制御装置を提供する【解決手段】１棟の又は複数棟の温室（ビニルハウスなど）のそれぞれに設備された複数の電動式通風換気装置それぞれの電動機３…と、その電源トランス盤２とを接続する電力線５は、各電動機３毎に独立した配線とし、各電力線５は、各電動機３毎に独立した端子を備えた配電盤４の対応する開閉スイッチ４０を中継して各電動機３…との接続が行われており、配電盤４の各開閉スイッチ４０を予め、該当する電動式通風換気装置毎に必要な開閉条件に従う操作条件を設定して、制御盤１を通じて電源トランス盤２のオン、オフ操作を行い、個別に選択、設定した電動式通風換気装置の電動機３…を開閉動作させる。【選択図】図１
