ALEKO LM102 Infrared Photocell Sensor Gate Opener Accessory Accessory for ALEKO brand gate openers; compatible with both swing and slide gate opener models Infrared beam will prevent gate from closing when theres 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: 24VDC or 110VAC voltage, 40 feet range