Product Name: 500W RV Car Low Frequency Power Inverters Model NO.: HSI-50112P20 Nature of Wave String: Sine Wave Inverter Circuit Topologies: Full-Bridge Type Power Source: Solar Power, Wind Power Type: DC/AC Inverters Brand: One Enverter Certification: CE, ISO9001 Output Power: 500W Phase: Single Nature of Source Flow: Active Inverter Color: Blue Trademark: One-Innverter Transport Package: Strong Box Specification: 345*345*187 Origin: China Product Description 500W HSI Series Low-Frequency Pure Sine Wave Inverter with PWM Solar ControllerWall-mountedProduct Feature:1.Selectable Grid power priority, Solar Power priority or power Saver Modes 2.Low-frequency toroidal transformer, Pure sine wave with AVR 3.LCD display, Smart setup and simple operation by LCD 4.Automatic Transfer Timeless than 8ms 5. Comprehensive protection for overload, short-circuit, Battery Low and else 6.Smart fan and Alarm 7.Rs232 / SNMP communication optional