Shenzhen Cheyang Technology Co.,Ltd. FCC Software Configuration Control Declaration Date: April 9, 2024 Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Attn:
OET Dept. Product/ Model Number: AI box/ A3528 Regarding FCC Country Code Selection guidelines identified in KDB 594280. All applications for equipment authorization for transmitters that can have radio parameters, or other technical parameters, reported to the Commission set by software must have an attestation indicating that no third party will have software, or configuration control, to program the device out of compliance of the technical rules under which it has been certified. We declare that no third party will have software, or configuration control, to program the device out of compliance of the technical rules under which it has been certified. Name: Hengbin Tian Date: April 9, 2024 Title:Manager Signature of applicant