DC OK Signal Instruction of Smart Alarm Din Rail Power Series Lead Acid Battery Charging Curve Technical Supports Why choose optional Reign Power AC-DC power modules ? Why chose Output Monitoring Digital Display Rail Power ? Why using Reign Power Intelligent Power Supply ? Why the label of AC input rage show 100~240VAC, but the specification show as 90~264VAC ? Why power supply shut down when using on the servomotor application ? Why the input voltage marked on the spec. sheet is 88~264 VAC while that it is 100~240VAC ? The output ground (GND) and frame ground (FG) is the same point in my system, can REIGN POWER's power supplies use in such system ?