Abstract: A ceramic electronic component includes a body including a dielectric layer and an internal electrode disposed alternately with the dielectric layer; and an external electrode disposed on the body, wherein the dielectric layer includes a first region extending from an interfacial surface with the internal electrode to 50 nm of the dielectric layer in an inward direction and a second region excluding the first region, and wherein, in the first region, an average content of In based on overall elements excluding oxygen is 0.5 at % or more and 2.0 at % or less, and an average content of Sn based on overall elements excluding oxygen is 0.5 at % or more and 1.75 at % or less.

Abstract: Provided is a heat pump system including a compressor for compressing a refrigerant the heat pump system including: an input interface configured to receive an input of an authentication code; a display configured to display the authentication code input through the input interface; and a controller to control an operation of the heat pump system according to whether a control program to control the operation is to be activated based on the authentication code input through the input interface.