47 CFR § 10.530 - Common vibration cadence.

---
identifier: "/us/cfr/t47/s10.530"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "47 CFR § 10.530 - Common vibration cadence."
title_number: 47
title_name: "Telecommunication"
section_number: "10.530"
section_name: "Common vibration cadence."
chapter_name: "FEDERAL COMMUNICATIONS COMMISSION"
subchapter_number: "A"
subchapter_name: "GENERAL"
part_number: "10"
part_name: "WIRELESS EMERGENCY ALERTS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "47 U.S.C. 151, 152, 154(i), 154(n), 201, 301, 303(b), 303(e), 303(g), 303(j), 303(r), 307, 309, 316, 403, 544(g), 606, 1201, 1202, 1203, 1204, and 1206."
regulatory_source: "73 FR 43117, July 24, 2008, unless otherwise noted."
cfr_part: "10"
---


# 10.530 Common vibration cadence.

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.

(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.

(b) The vibration cadence must be restricted to use for Alert Messages under part 10.

(c) A device may include the capability to mute the vibration cadence.

[73 FR 43117, July 24, 2008, as amended at 90 FR 12468, Mar. 18, 2025]