Model 351U80 is an electric locking element with fail unlocked function that enables the remote controlled locking or unlocking of swing doors. It is equipped with an armature and a monitoring contact which are both potential-free switch over contacts. The armature contact can be used for monitoring the locking status. The locking element must be installed in the door frame, while the striking plate is to be mounted on the door leaf. They can be installed in either the vertical or horizontal orientation
