Duct Fan 200mm with Stepless Speed Control Switch 100-120V

Used for ventilation at home. There is dirt such as dust, but there are no problems with operation.
As a bonus, I will include the Elecom 3P to 2P conversion adapter shown in the photo.
The box and instruction manual are not included.
The following is the product description from Amazon.

Hon&Guan Duct Fan 200mm Ultimate Airflow 1292m³/h Powerful Stepless Speed Control Switch 100~120V Duct Fan

List price: 25,687 yen
Brand: Hon&Guan
Color: Black
Electric fan design: Ventilation fan
Power source: Corded electric
Style: Industrial
Product dimensions: 24.3D x 32.3W x 23.2H cm