Composite sensor

A composite sensor comprising:

• a first sensor outputting a first sensor signal corresponding to a detection subject;
• a second sensor outputting a second sensor signal corresponding to a detection subject different from the detection subject of the first sensor;
• a circuit board electrically connected to the first sensor and the second sensor;
• and
• a mount member having one surface, wherein the first sensor, the second sensor, and the circuit board are disposed on the one surface of the mount member,
• the first sensor and the second sensor have respective input terminals to which respective input signals having predetermined amplitudes and predetermined frequencies are inputted,
• the first sensor and the second sensor have respective output terminals, the first sensor signal being outputted from the output terminal of the first sensor, and the second sensor signal being outputted from the output terminal of the second sensor,
• when viewed in a direction normal to the one surface, the first sensor and the second sensor are arranged along a direction,
• a virtual line is defined by a straight line which passes respective centers of the first sensor and the second sensor and is parallel to an arrangement direction of the first sensor and the second sensor, and
• the respective input terminals of the first sensor and the second sensor are disposed in one of two regions divided by the virtual line, and the respective output terminals of the first sensor and the second sensor are disposed in a remaining one of the two regions divided by the virtual line.