1.XMTD-841WP relay output
2.XMTD-851WP solid state relay output
3.XMTD-861WP thyristor trigger
4.XMTD-891WP output 4-20mA
5.XMTD-841WPR4 relay output + communication
6.XMTD-851WPR4 solid-state output + communication
7.XMTD-861WPR4 thyristor triggered +communication
8.XMTD-891WPR4 output 4-20ma+ communication