Product Name: Square Wave HBC Series DC/AC Inverter 500va Model NO.: HBC-500VA Type: DC/AC Inverters Output Power: 401 - 500W Phase: Single Power Source: Wind Power Trademark: HOSSONI or OEM Transport Package: Carton Specification: CE, ISO9001 Origin: Wenzhou, Zhejiang Product Description HBC-500VA, HBC-800VA, HBC-1000VA, HBC-1200VA, HBC-1500VA, Parameters: Output voltage: 220V± 10% or 110V automatic stabilized voltageCharging input voltage: 220V± 10%Output frequency: 50Hz± 2% automatic stabilized frequencySwitching type: Auto switch in 15msOutput wave form: PWM square wave back-up output long-lasting outputHolding time: The time for HBC is determined by the capacity and loadEfficiency: ≥ 0.7Battery method: HBC is the external connected battery