UNSPSC 43221528: Supervisory signal unit

A device to monitor the motion of switchboard by mount on the console of the switching system.

UNSPSC 43221528 Supervisory signal unit is a Commodity code describing emergency communications equipment and satellite-based phone systems with push-to-talk capability that state and local governments procure for law enforcement, emergency response, and critical infrastructure operations. Recent activity shows jurisdictions acquiring satellite phones with dedicated emergency channels, mobile radio systems, and legacy telephone maintenance infrastructure to support field coordination and public safety functions. Issuing bodies span county governments (Collier County, Santa Clara County), school districts (Hillsborough County Public Schools, Cache County School District), state departments (Texas Department of Information Resources, Texas Department of Transportation, Illinois Department of Innovation and Technology), and regional cooperative purchasing vehicles (Sourcewell).

Recent opportunities are concentrated in Florida, Texas, California, and the upper Midwest. Representative recent solicitations include Collier County Board of County Commissioners issuing a notice of intent to single-source Skybase Communications LLC on June 30, 2026, for a five-year contract delivering Iridium phones with push-to-talk capability and exclusive access to the FloridaSatNet network with dedicated emergency channels monitored by the Florida Watch Office (response deadline July 22, 2026); the Texas Department of Information Resources requesting offers on May 26, 2026, for an indefinite-quantity, multiple-award contract covering cellular, wireless, pager, and satellite voice and data services with responses due July 23, 2026; Hillsborough County Public Schools issuing two separate ITBs (posted April 13 and March 23, 2026) for supplemental maintenance and repair of Nortel/Avaya telephone systems and Honeywell Vista Series security panels across 235 schools and facilities serving approximately 225,000 students; and Cache County School District requesting bids on January 29, 2026, for a main service switchboard upgrade at Millville Elementary School with a February 5, 2026, deadline. Activity reflects ongoing replacement cycles for legacy telephone infrastructure alongside new satellite and wireless communications capacity for emergency response operations.