The MLA2540 5-Lead Shielded Bio Amp Cable is suitable for use with the MLA2505
Shielded 'Snap On' Lead Wires (5 pack). The MLA2540 is suitable for use with the ML135
Dual Bio Amp, ML408
Dual Bio Amp/Stimulator and any PowerLab with a built-in dual bio amp such as the current ML865
PowerLab 4/25T, as well as the obsolete Powerlab/4ST or PowerLab 4/20T.