A heating section 20 having heating elements using carbon which generates heat when a high-frequency electric current is fed to a coil whose pitch can be adjusted as desired is arranged in a heating chamber 10. The merchandise security device may include a lock mechanism operably engaged with a shape memory material configured to receive electrical power for locking and unlocking the lock mechanism. A conductive line is formed which is laterally spaced from the diffusion region. For other request and response packets, nodes fast-switch the packets based on the label mappings; thus, packet flows are rapidly routed from the client to the same server without time-consuming hop-by-hop routing or repeated load-balancing decisions. An output terminal of the operational amplifier is connected to a first terminal of the controller, a second terminal of the controller is connected to a system power pin of the PCI interface, a third terminal of the controller is grounded, the power of the controller is adjusted by controlling the at least two switches.