.. Switch off the power before wiring. .. DVPDNET-SL is an OPEN TYPE device and therefore should be installed in an enclosure free of airborne dust, humidity, electric shock and vibration. The enclosure should prevent non-maintenance staff from operating the device (e.g. key or specific tools are required for operating the enclosure) in case danger and damage on the device may occur. .. DVPDNET-SL is to be used for controlling the operating machine and equipment. In order not to damage it, only