Beijing Roborock Technology Co., Ltd. Request for Class II Permissive Change FCC ID: 2AN2O-RSW02 Data: July 17, 2019 TO: Federal Communication Commission Please be notified that we, the undersigned, Beijing Roborock Technology Co., Ltd. declare our product original certified at 06/27/2018, and have the reasons for this Class II permissive change are as below:
1. Request approval for add a vacuum cleaner host (Model: roborock S4), with same antenna design and same type, except antenna gain change from 3.7dBi to 4.2dBi. Radiated emission testing was performed to demonstrate RF compliance. Thank you. Sincerely, Jiachao Li Tel010-53241660 Beijing Roborock Technology Co., Ltd. lijiachao@roborock.com