An inspecting device is provided, including a base, a circuit assembly, an electrocardiography sensor, a diaphragm, an annular member, and a positioning member. The base has a top surface, a bottom surface, a guiding portion, an opening, and an accommodating space. The guiding portion is formed on the top surface, the opening is formed on the bottom surface, and the accommodating space is formed between the top surface and the bottom surface. The circuit assembly is disposed in the accommodating space, and has a first contact, and a second contact. The electrocardiography sensor is disposed on the bottom surface and electrically connected to the circuit assembly. The diaphragm covers the opening. The annular member is rotatably connected to the base and has a guiding member and a pin. The guiding member is slidably connected to the guiding portion. The positioning member is affixed to the annular member and has a contacting portion.本創作提供一種感測裝置，包括一底座、一電路組件、一心電圖感測器、一振膜、一環狀元件、以及一定位元件。底座具有一頂面、一底面、一導引部、一開口、以及一容置空間，其中導引部形成於頂面，開口形成於底面，且容置空間位於底面和頂面之間。電路組件設置於容置空間中，且具有一第一接點、以及一第二接點。心電圖感測器設置於底面，且電性連接電路組件。振膜覆蓋開口。環狀元件可轉動地連接底座，且具有一導引元件，導引元件以可滑動的方式與導引部結合。定位元件固定地連接環狀元件，且具有一接觸部。
