Inverter+ is an isolated inverter designed for converting 60v dc 220v ac 50hz. When main elevator electricity is disconnected this inverter provides the required electricity for motor's magnet brake, door magnet, cabin's motor drive supply and cabin's light. This board contains switching charger for charging its batteries while electricity is connected and main power is down if command switch is connected, 220v simulated sine wave is created as output. dc to mono-phase voltage , 220v50hz converterinput voltage range: 45 to 100 v dcoutput power 1000w & short-circuit protectionequipped with battery charger