... LED Failure: Red LED and alarmLED Display: Voltage, Current, Power(optional) Material:AluminumColor:Red, blue, silverOrder:Accept small orderUsage ... Under/over voltage protective, reverse protection, over load protection power, over temperature, main automatic switching function (optional).7.Work ... .How to choose a good inverter?1. Select and use metal casings.2. The best option is split type power ...