Auxiliary safety module for doors provided with an anti-panic opening device, comprising, a rotating locking member movable between an extracted position and a recessed position, a first elastic element tending to maintain the locking member in its extracted position, a cursor movable between a first position and a second position, a transmission mechanism operatively associated to the cursor and to the locking member and arranged to establish a univocal correlation between the positions of the cursor and of the locking member, so that when the cursor is in its first position, the locking member is in the extracted position and when the cursor is in the second position, the locking member is in the recessed position, a movable feeler having a projecting portion and a retaining portion which co-operates with the cursor, the feeler being movable between an engaged position and a disengaged position, a second elastic element associated to the feeler and tending to maintain the feeler in said engaged position, wherein, when the feeler is in its disengaged position, the cursor is free to move between the first and the second position and vice versa and wherein when the feeler is in the engaged position, the cursor is locked in its second position.