ML300-P-6m-RT/59/98/103. . Miniature design. Easy to use. Visible red light. 45?°„ connector. 45?°„ connector. Version with Certification in accordance with railway standard EN50155. 4-in-1 output (push-pull). Up to SIL 3 acc. to IEC/EN 61508. Busy channel indication. Auto power off function