• 100% energy saving in day time. Only solar panel drive.
• AC grid power limiter,  limit AC power from 0-600W
• AC power mode,  DC power mode, AC+DC mix power supply (AC/DC Auto Balance)
• No inverter, no battery, no charge controller, and full DC driven
•Wide operating temporature  (-10℃ to 58 ℃)
• Long warranty years