We are offering pure sine wave inverter. Pure sine wave inverter 500w(dc12v/24v--ac220vitem no.:dx500s max continuous power:500w peak load power rate:1000w no load current draw: 86%high voltage cut off level:15.5 +/- 1v low voltage alarm level:10.5 +/- 0.5v low voltage cut off level:10 +/- 0.5v overload and short-circuit protection input voltage:dc 12v thd:5% built-in cooling fan product size:255*150*71mm n.w:1.9kgmoq:100pcs