Sensor unit, construction machine, and structure monitoring device

A sensor unit comprising:

• a container including a base and a lid attached to the base to configure a housing space between the lid and the base;
• an inertial sensor housed in the housing space;
• and
• a first connector and a second connector attached to the container, wherein
• the container includes:
• a first sidewall;
• a second sidewall opposed to the first sidewall;
• a third sidewall connected to one end of the first sidewall and one end of the second sidewall;
• and
• a fourth sidewall connected to the other end of the first sidewall and the other end of the second sidewall and opposed to the third sidewall,
• the base has a first fixed region and a second fixed region that are opposite to each other along a first direction in a plan view, and the lid is located between the first fixed region and the second fixed region in the plan view,
• a first through-hole is provided in the first fixed region, and a second through-hole is provided in the second fixed region,
• the first fixed region, the first sidewall, the second sidewall, and the second fixed region are arranged from one side to the other side along the first direction in the plan view,
• the first connector does not overlap the first through-hole in the plan view, and the second connector does not overlap the second through-hole in the plan view,
• the first connector and the second through-hole are aligned opposite to each other across the housing space along the first direction,
• the second connector and the first through-hole are aligned opposite to each other across the housing space along the first direction,
• the base has first and second surface outwardly opposite to each other, the lid is attached to the first surface of the base,
• the first fixed region and the second fixed region have a first hole section and a second hole section for positioning that are provided at positions not overlapping the first through-hole and the second through-hole, respectively, in the plan view, and
• each of the first and second hole sections is a recessed section provided in the second surface of the base or a through-hole piercing through the base from the first surface to the second surface.