When using the surface EMG sensor (SX230) with any Biometrics Ltd instrument, independent of the number of EMG sensors used at any one time, only one of the following ground reference cables is required:
The R606 plastic ground strap has a standard 4mm snap connector and comes with convenient elasticated wrist bands for ease of use. The R606 may also be used with proprietary reusable or disposable electrodes having a 4mm snap.
The R506 metal ground strap is the same as the R606 and is required for the K800 Amplifier and older models of DataLOG and DataLINK interfaces.
The R306 ground strap comes with a standard 2mm spring plug for connection to proprietary disposable electrodes with a 2mm spring socket.