These module extension cables are used to increase the distance between subject and recording system, allowing increased subject movement and comfort. Each extension cable attaches to one amplifier; electrodes and transducers plug into the extension cable's molded plastic input plug. The 3 meter long extension includes a clip for attaching to a subject's belt loop or clothing. The MEC101 is required for the protection of your MP System and Biopotential amplifiers when electrocautery or defibrillation equipment is used while recording data. MEC101: 100B-Series Biopotential amplifiers to 2mm socket inputs - Protected IMPORTANT SAFETY NOTE: The MEC101 is not to be used on humans when they are undergoing electrosurgery or defibrillation. In fact, no BIOPAC equipment should be connected to human subjects during the course of defibrillation or electrosurgery. MEC101 Extension Cable, Biopotential Amplifiers to 2 mm Socket Inputs - Protected MEC101$245.00 Same Day Shipping - orders with UPS Red or Blue shipping will be shipped the same day if received by 3 p.m. PT (Monday-Friday).