The U.S. aircraft register, updated daily
Who holds what · as the FAA records the name

Ceis Tm

Named as the FAA publishes it on its approvals.

Approved to make 4 classes of equipment. FAA spelling: CEIS TM.

Equipment approvals technical standard order authorisations

1988-01-02TSO-C91A · EMERGENCY LOCATOR TRANSMITTER (ELT) EQUIPMENT · *, *, * · emergency equipment
1988-01-01TSO-C91A · EMERGENCY LOCATOR TRANSMITTER (ELT) EQUIPMENT · *, *, whip antenna · emergency equipment
TSO-C126 · 406 Mhz Emergency Locator Transmitter (Elt) · *, *, * · emergency equipment
TSO-C126 · 406 Mhz Emergency Locator Transmitter (Elt) · *, whip antenna, opt. remote control panel · emergency equipment

Source: FAA Dynamic Regulatory System (type certificate data sheets, supplemental type certificates, parts manufacturer approvals, technical standard order authorisations). An organisation's name is as the FAA spelled it on each record; related spellings are separate pages.