Electric strike eff-eff 138RR FAFIX 12 V DC (138RR-E91) standard, normally open, universal, symmetrical, reed adjustment, 12 V, 235 mA, 74x16x26 mm, -15 ... + 40 °C. Designed to work as a locking device in access control and management systems. It is used in conjunction with a mechanical crossbar lock and cuts into the door frame instead of the standard counterpart.