The SENTRY™ A6 MAX is a cost-effective, easy-to-install solution for controlling sliding domestic and industrial gates with a mass of up to 600 kg. A custom designed gearbox moulded from robust engineering polymers, coupled to a powerful 12V DC motor, provides fast and reliable automation for entrances to homes, offices and housing estates. The system operates off 220VAC mains power and has a 12V DC back-up battery housed inside the operator. The power supply also charges the battery to maintain it in a fully charged state. The battery provides true back-up power in the case of power failure. A regulated 13.8VDC external (solar) power supply can be connected to the system as well.