This XPSAK safety module monitors emergency shutdown pushbuttons, limit switches, light curtains and safety mats/edges. It meets the requirements of Performance Level PL e/Category 4 conforming to standard EN/ISO 13849-1 and SILCL3 conforming to EN/IEC 61508 and EN/IEC 62061. It can be used for monitoring emergency stop circuits conforming to standards EN/ISO 13850 and EN/IEC 60204-1. It can also be used for electrical monitoring of switches activated by protection devices, with optional selection of synchronisation time between signals, monitoring of 4-wire sensing mats or edges. And monitoring of type 4 light curtains conforming to EN/IEC 61496-1 which have solid-state safety outputs with test function (light curtains XUSL). 24V AC/DC supply allows direct supply via an auxiliary transformer, like ABT7 or ABL6, allowing saving at installation time. It is compatible with emergency push buttons, limit switches, safety light curtains and safety mats/edges, the 4 most common safety sensors in the industry. It has removable terminals for easier and better control wires tightening, thus improving installation reliability. It has additional solid-state output for communication with PLCs about safety status of your process.