Cal-Royal electric strikes offer value and dependability. Cal-Royal electric strikes are available for use with a wide range of hardware from cylindrical locks to rim mounted exit devices. Cal-Royal electric strikes are an easy to install solution for safety and security. Electric Strikes are an access control device. electric strikes replace the standard door strike on the door frame and are connected to a power supply. Cal-royal offers electric strikes for indoor or outdoor, cylindrical or mortise locksets and rim mounted exit devices. Electric strikes are used in electromagnetic locking systems to control the locking mechanism on doors in secure areas.