Abstract: An area sensor includes: a sensor unit that emits measurement light with which a monitoring area is scanned, and detects reflected light of the measurement light; and a system controller that controls the sensor unit to output sensor information to an external device, the sensor information including object information in the monitoring area obtained based on an output signal from the sensor unit, the system controller including: a memory interface to which a portable external storage device is connectable, a sensor controller that controls the sensor unit, and a memory controller that accesses the external storage device; and a start processing unit which operates the memory controller in priority to the system controller, when the external storage device is connected to the memory interface.

Abstract: An area sensor includes: a sensor unit that emits measurement light with which a monitoring area is scanned, and detects reflected light of the measurement light; and a system controller that controls the sensor unit to output sensor information to an external device, the sensor information including object information in the monitoring area obtained based on an output signal from the sensor unit, the system controller including: a memory interface to which a portable external storage device is connectable, a sensor controller that controls the sensor unit, and a memory controller that accesses the external storage device; and a start processing unit which operates the memory controller in priority to the system controller, when the external storage device is connected to the memory interface.