Schneider XBTZ939 Description Description Schneider Interface Unit, Current loop to RS232 (also used with XBTZ980 for XBTRT511) Related products SCHNEIDER TSXDEY64D2K SCHNEIDER TSXDET1612 SCHNEIDER TSX3705001 SCHNEIDER TSXPSY1610 SCHNEIDER TSXASR402 SCHNEIDER ATV58HD12M2