Patent ID: 6893545

Claim:
A biosensor device which comprises a device body having a connector part and a control part including a display part, the connector part having input terminals, and a reaction sensor member having a working electrode and a counter electrode which is to be inserted into the connector part of the device body in such a manner as to be attachable and detachable, the reaction sensor member having an output terminal of the working electrode and an output terminal of the counter electrode that are electrically connected to a first two of the input terminals of the connector part when the reaction sensor member is inserted into the connector part of the device body, and wherein a reaction part is formed on at least the working electrode, the reaction sensor member further having a sensor insertion signal terminal, the connector part of the device body having a second two input terminals, wherein the sensor insertion signal terminal has an output terminal which makes contact with the second two input terminals of the connector part, so that the control part including the display part of the device body is started when the output terminal of the sensor insertion signal terminal comes in contact with the second two input terminals.