ALEKO LM102 Wired Infrared Photocell Sensor Gate Opener Eye is an accessory for ALEKO brand gate openers; compatible with both swing and slide gate opener models. Infrared beam will prevent gate from closing when there’s something in the way; protects your health and property. Egg shaped design will keep rain and snow out of the photocell; prevents the system from getting confused and opening or closing the gate at the wrong time. Can be used anywhere an infrared beam could be useful: garage doors, alarm systems, etc. Product specifications: 30 feet Range; AC/DC 12-24V