Quiet and beautiful, electric shock integration is efficient and cost-effective This electric door opener can be widely used in residential quarters, retail stores, pharmacies, laundry rooms, offices, restrooms, hospitals, air showers, clean rooms, etc. Each has a safety feature door opener built in. When the opener detects an obstacle during operation, it will automatically open or close immediately. Until the opener is activated again, the obstacle is cleared. Gearboxes are steel, not plastic, so last longer Battery Convenience Mode - In the event of a power failure, the operator can be activated on battery power to continue operation, Manufacturer: MOOILKO