The IO-Link safety I/O hub is enabled for Profisafe and a host of safety field devices, including an e-stop push button, interlocking door/gate switches and light curtains. When used in conjunction with a Profisafe controller, the I/O hub can achieve Safety Integrity Level (SIL) CL 3 according to EN/IEC 62061 or Safety Performance Level (PL) e according to ISO 13849-1. The product carries a Profisafe conformance certificate from the Profibus user organization and certificates for EN/IEC 61508 and EN/ISO13849-1 (TÜV SÜD). It uses a black channel tunneling principle to communicate with the Profisafe controller via a Balluff Profinet IO-Link master.