Position detection sensor

A position detection sensor configured to detect a position of a displacement body movable in parallel with a first direction, the position detection sensor comprising:

• a detection device configured to generate a detection signal according to a position of a magnet provided on the displacement body;
• a position specification unit configured to specify a position of the displacement body in the first direction on a basis of the detection signal generated by the detection device;
• a first housing configured to accommodate at least a part of the detection device and extending along the first direction;
• a second housing connected to the first housing via a cable;
• an input unit provided in the second housing and configured to receive an operation input;
• a display unit provided in the second housing, including a plurality of display elements arranged on the second housing at positions different from each other along a second direction corresponding to the first direction, and configured to display a position symbol indicating a position of the displacement body along the first direction and a threshold symbol indicating a position of a threshold;
• and
• a display control unit provided in the second housing, configured to control the display unit to display in different modes, by displaying the position symbol at different positions on the plurality of display elements, a first state in which the displacement body exists at a first position corresponding to one end portion of a displacement range, a second state in which the displacement body exists at a second position corresponding to another end portion of the displacement range, and an intermediate state in which the displacement body exists at an intermediate position between the first position and the second position, and configured to control the display unit to display the threshold symbol at different positions on the plurality of display elements in accordance with a threshold set according to the operation input received via the input unit.