INTRINSICALLY SAFE HAND-PORTABLE. Offering all the functionality of the STP8X, the reduced-keypad. STP8X100 has been specially designed for use with heavilyView online Product manual for Sepura SRG3500 Touch terminals or simply click For STP8X radios a Sepura approved ATEX/IECEx Antenna must be used. The Intrinsically Safe Sepura TETRA radio provides class-leading audio clarity and with a large, high resolution display, the STP8X000 provides crystal The two radios in the STP8X series form the foundation of Sepura's market-leading portfolio of Intrinsically-Safe (IS) TETRA solutions. View the User Manual for the Sepura plc model STP8X STP Series Radio XX6STP8X. View the PDF file for free. No joining required.