47 CFR § 96.47
End user device additional requirements
February 16, 2021
(a) End User Devices may operate only if they can positively receive and decode an authorization signal transmitted by a CBSD, including the frequencies and power limits for their operation.
(1) An End User Device must discontinue operations, change frequencies, or change its operational power level within 10 seconds of receiving instructions from its associated CBSD.
(2) [Reserved]
(b) Any device operated at higher power than specified for End User Devices in §96.41 will be classified as, and subject to, the operational requirements of a CBSD.