inputs.text: clean steady sine wave output 12vdc 120vac inverter good quality workmanship product - aims power picoglf30w12v120vr 3000 watt inverterthis low frequency pure sine wave inverter exactly advertised connected two large agm batteries examined ac output oscilloscope ac clean steady 122 vac next connected ac sine wave input 3000 watt generator transfer switch worked perfectly quickly observed multistage battery charger also worked perfectly good quality workmanship product competitive price lot feature price owner review comparison buying best deal found multifeatured pure sine invertertransfer switchbattery chargersolar controllerthis unit still working perfectly year use could not pleased purchase