This chapter describes the device clinic. Requirements for a suitable facility, including maintaining patient dignity, are covered, and the development of remote follow-up is defined, including advantages and disadvantages. The follow-up schedule is covered, and history taking and examination are covered. Pacemaker testing and interrogation are shown, to aid the physician in management, diagnosis, and optimization of programming. Implantable cardioverter defibrillator (ICD) follow-up is also described, with all additional information required for follow-up described. Finally, cardiac resynchronization therapy (CRT) follow-up differences from standard pacemaker checks are covered.