The Command Access CL180LEEUL6626SFIC CACC Low Energy CYL LOCK-FAIL SECURE-SFIC is a security device that secures access to a closed or restricted area. It is designed to prevent unauthorized entry into a protected area. The CL180LEEUL6626SFIC CACC Low Energy CYL LOCK-FAIL SECURE-SFIC is a keyless entry system that uses a radio frequency identification (RFID) tag to identify the authorized user. The CL180LEEUL6626SFIC CACC Low Energy CYL LOCK-FAIL SECURE-SFIC is also equipped with a fail secure feature that prevents unauthorized access to the protected area if the RFID tag is not properly inserted or if the battery is not working.