Phoenix Contact 1628484 The M23 PRO device connector features an angled, rotatable design for secure fastening and comes equipped with a standard locking system that also supports the ONECLICK fast locking mechanism. It has four pins and three additional positions with PE markings for flexibility in connection options. The standard contact connection type uses pins, and crimp connections are available as an option. With dimensions of 28mm x 28mm, this connector meets lead-free requirements under RoHS II standards.