The donut wall lamp adjustable brightness for various tasks, light quality and comfort, and ease of brightness adjustment.its has multiple control methods, After plugging in the power cord, touch the silver ring in the center of the orange donut light fixture to turn it on,and you can touch the silver part in the middle of the lamp with your hand to control the light's brightness and color. Or when you lie on the sofa or bed, you can easily control it with a remote control.
This donut wall lamp can not only be used as a Table lamp, bedroom bedside lamp, but also as a plug-in wall sconce. If you want to use it as a wireless wall lamp, simply cut off the base and install it wirelessly with a hard wired connection.

V-Ray versions are lower than 3.1, be careful, in the materials in the BRDF section there is Microfaset GTR ( GGX ), if your version is older than 3.1, then the BRDF field will be empty. Choose Blinn, Phong or Ward - whichever suits you best"

For Corona render, it is recommended to install a version of at least 1.5, since the glossiness of materials is configured with PBR in mind.

link:
https://www.amazon.com/-/zh/dp/B0CGM53SQM/ref=sr_1_40?c=ts&dib=eyJ2IjoiMSJ9.U8wz4yZLV_ivtOpmiZebwAD5BvhTzzJR2Q4hWziGQaviQLGoEQRZCVyECZiH9M_sJKJVNLCq4fp0jXX61jj8cnM78LJpYjZ3O4LAXP8Bh6AqbPFAeOa1g8Zy5wjI-P4xsB-g7VxUsYx1723kIN_aXH68BPZ7jQ8_1rzNLYbmjB1tXN-48zSeKTX296Mr28bf12_WeMrTbViTJNSHMrMJN7cxrRAjsRe_OdjsgjJQIYMS7EmPHDiwqEGZySSZ8vXF4697dnCYrZvF5TQGRvh3FNDzFuLZ7tS59r5YMXoXOA8.UBTsWP7mAR6KCjmHdJrYqWTrdkZ4ZteuMKzxsmYfN4I&dib_tag=se&keywords=%E5%A3%81%E7%81%AF%E5%8F%B0&qid=1794185256&s=lamps-light&sr=1-40&ts_id=3736721&xpid=LvHpM9ZYPTR-d