Works with DL489, DL429, DL429B, DL419, DL389B, DL379B, DL479, DL469, DM505, DM515, DM525, DM393, UTL291, UTLDM1, UTLDM2, UTL33T, DMEG3, IRT3 Fit industry standard input jacks Standard test set when the current ones get damaged and are no longer usable