The U148DT electric rim lock system is meant for both electrical and hand (physical) control. Suitable to be equipped with intercom system or access control system. This lock upports electrical control or key operation. It has functions of high guard and high security, e.g. protect non-key’s unlock after message feedback. Fits for building intercom or access control systems. Could be mounted in residential building, commercial housing, hotel, warehouse, organ, school, etc.