June 28 (Reuters) - U.S.-based Keysight Technologies said on Wednesday it would acquire France-based ESI Group for 913 million euros ($995.81 million).

Keysight will pay 155 euros per ESI share in cash. ($1 = 0.9168 euros) (Reporting by Lavanya Ahire in Bengaluru; Editing by Subhranshu Sahu)