Pacer International, a supplier of optoelectronic, display and laser solutions, announced it has opened a new office and added staff to support its US technical representative network and strengthen its presence in North America. The office in Blue Bell, Pa., will be the headquarters of its North American operation, Pacer USA LLC. The company named David House to head the US sales and support team; House joins Pacer from PerkinElmer, where he was western US sales leader for the Optoelectronic Industrial Sensors Div.