This is a special set of the SM2-MU-Start, piggy-485-isol board and an adapted patch cable for connection with Steca Tarom 6000-M, 6000-S, 4545 or 4545-48 MPPT chargers. You can use the patch cable for powering the SM2-MU-Start from Steca MPPT chargers (except Tarom 4545 model). Everything you need to monitor your Steca technology - web interface + Modbus...