EMX IRB-325 Infrared Photoeye Safety Sensors When the infrared beam is broken the IRB-325 produces detection signals Complies with UL 325 Standard Range: 6 to 65 feet. Power: 12V to 24V DC or AC 150MA Relay Contacts: 30V 1A Housing: UL and CSA type 4, 4X 3, 3R, 12 13 rating