StacksVerified U.S. regulatory reference

47 CFR §10.530

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
A Participating CMS Provider and equipment manufacturers may only market a mobile device for public use under part 10 as a “WEA-capable mobile device” if the mobile device includes a vibration cadence capability that meets the requirements of this section.
  1. (a)The vibration cadence must have a temporal pattern of one long vibration of two (2) seconds, followed by two short vibrations of one (1) second each, with a half (0.5) second interval between each vibration. The entire sequence must be repeated twice with a half (0.5) second interval between each repetition.
  2. (b)The vibration cadence must be restricted to use for Alert Messages under part 10.
  3. (c)A device may include the capability to mute the vibration cadence.