5516 Tubular Key, DT Security ADT Home Security Key

This is a code 5516 Tubular or Barrel key used for DT Security and ADT Home Security equipment. Your lock must have the code 5516 on it and be used for this application, otherwise it will not work. The code may be on the side of the body. Key will be cut and ready to open the lock. This is a TUBULAR or Barrel type key and the type of key blank used is pictured.