UNSPSC 43222703: Telegraph sounders

A component of a telegraph system that could recognize the different sounds made by the register as dots and dashes. This device used an electromagnet to pull on a piece of iron and make a clicking sound. When the electromagnet pulled on the iron, it made a more solid and heavy sounding click and when it released the iron, it made a thinner and lighter sounding click. Operators learned to discriminate between these two sounds and to use this ability to tell whether they were hearing a dot or a dash.

UNSPSC 43222703 Telegraph sounders is a Commodity code covering electroacoustic signaling and alert devices used by law enforcement and other public safety agencies. State and local governments procure these devices as components of broader law enforcement equipment systems, typically integrated into dispatch centers, emergency response vehicles, or facility-based warning and notification infrastructure. The code sits within a narrow product family with limited recent solicitation activity; the one posting in the dataset reflects demand through cooperative purchasing channels rather than direct agency procurement.

Sourcewell, a Minnesota local government cooperative, issued RFP #061626 on May 12, 2026 (response due June 16, 2026) on behalf of participating counties in Washington State — Franklin, Grant, Grays Harbor, Chelan, and Yakima — and thousands of other governmental agencies, higher education institutions, school districts, nonprofit organizations, and tribal governments throughout the United States and Canada. The solicitation seeks to establish a framework for law enforcement equipment available to this broad network of public entities under a single contracting vehicle. Submissions close June 16, 2026 at 3:30 p.m. Central Time exclusively through the Sourcewell Procurement Portal; vendors must create a free account to access documents and submit proposals. The cooperative structure allows flexibility in how selected vendors deploy equipment across participating jurisdictions. No set-aside designations, incumbent vendor names, or award values are identified in available documentation.