PHOENIX CONTACT USA Safety Relays 1104888

The PSR-M-EF2-SDI16-SC is a safety extension module with 16 safe inputs, designed for industrial emergency stop, light grid, and safety door applications. It mounts on a DIN rail, has a housing width of 22.6 mm, and includes a TBUS interface for connection to a master module. The module operates from a 24 V DC supply with a range of 19.2 V to 28.8 V DC, consumes up to 4.28 W under maximum load, and has a boot time of 5 to 10 seconds. It meets SIL 3 per EN IEC 62061 and IEC 61508, and Cat. 4/PL e per ISO 13849-1, and is cULus listed. It is rated for overvoltage category II, pollution degree 2, and protection class III, with basic insulation of 4 kV between power and I/Os. The unit weighs 159 g excluding packaging.