The TW-TA is a tall blue aluminum tower with assistance lettering for the IX Series emergency stations and designed to offer a light, durable tower for assistance and emergency call applications. The towers come with a blue strobe and reflective lettering on four sides.Use with the IX-DVF-2RA, IX-DVF-2RA-FR, IX-DVF-RA, IX-DVF-RA-FR, IX-SSA-2RA, IX-SSA 2RA FR, IX-SSA-RA, and IX-SSA-RA-FR.By adding the TW-SPL, the tower can be used with non-emergency call stations: IX-DVF and IX-SSA.