0-1VDC. For other input ranges, select ZR2 or ZRY under Special Options tab. Alternative to Din Rail Mount TransmitterTL-DCV-PS1-ID01-OIV Texmate Meter Base DL-40-DR-PS1-ID01-AIV-OA3 (SA-DL/OM-CB, OP-MTL96X48, OP-MTLCLIP)