Electric strike 118S Product description Model with basic equipment. effeff Smoke Protection Electric Strike 118 with FaFix® (FF) Overview of Advantages Radius keeper, FaFix®, adjustable by 3 mm Universal voltage Compatible with DIN 18250 mortise locks Symmetrical design. DIN left/right as well as horizontal applicable Contact Us Electric strike 118SRRFaFix®adjustment range, Monitoring contact, Fail-locked