PROBLEM TO BE SOLVED: To provide an endoscope apparatus capable of instantaneously determining connection of units to be connected and discriminating types thereof.SOLUTION: An endoscope apparatus 1 includes: a signal line 35 to be serially connected with each of a body 3, a liquid crystal panel unit 5, and a remote control unit 7 a resistance R1 to be connected to the signal line 35 in the body part 3 a resistance R2 to be connected to the signal line 35 in the liquid crystal panel unit 5 a resistance R3 to be connected to the signal line 35 in the remote control unit 7 and a main CPU 19 that determines the connection of the liquid crystal panel unit 5 and the remote control unit 7 according to a voltage level of the signal line 35, the voltage of which is divided by the resistance R1, resistance R2, and resistance R3, and discriminates at least a type of the liquid crystal panel unit 5, or a type of the remote control unit 7 according to an analogue voltage value of the signal line 35, the voltage of which is divided by the resistance R1, resistance R2, and resistance R3.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】接続されるユニットの接続判定及び種別判別を瞬時に行うことができる内視鏡装置を提供する。【解決手段】内視鏡装置1は、本体部3、液晶パネルユニット5、及び、リモコンユニット7内に直列に接続される信号線35と、本体部3内で信号線35に接続される抵抗R1と、液晶パネルユニット5内で信号線35に接続される抵抗R2と、リモコンユニット7内で信号線35に接続される抵抗R3と、抵抗R1、抵抗R2及び抵抗R3により分圧された信号線35の電圧レベルに応じて液晶パネルユニット5及びリモコンユニット7の接続を判定し、抵抗R1、抵抗R2及び抵抗R3により分圧された信号線35のアナログ電圧値に応じて少なくとも液晶パネルユニット5の種別またはリモコンユニット7の種別を判別するメインCPU19と、を有する。【選択図】図1