This document describes about the Niagara 4 Tls driver for the Veeder-Root TLS-250 and TLS–350 products (feature code tls) is a package of software that enables a JACE to communication with one or more Veeder-Root TLS 250 and 350 Controllers. The Veeder-Root TLS 250 and 350 controllers are capable of either an Ethernet or RS-232 connection depending on options included in the Veeder-Root controllers.