... protective, reverse protection, over load protection power, over temperature, main automatic switching function (optional).7.Work condition: inverter can be used ... .9.Principle of heat: Using temperature sensors control cool fan to thermal dissipation.10.Color: red, blue, sliver, black.11. ... .Payment: T/T(30% advance), L/C at sight, alipay.How to choose a good inverter?1. Select and use metal casings ...