This is the required accessory for paralle operation on 48V models of ISolar SP & SM series inverters.  One parallel kit is required for each unit in a parallel system, so (ex.) if you have have 3* SP/SM 4KVA-5KVA inverters in parallel, you need 3 parallel kits.

Each parallel kit contains aparallel board, a comm cable, and a current sharing cable.

Before setting up a parallel system please make sure:

1. all units you have are of the same software version, or there will be an incompatible error.
2. all units are in fact "parallel-ready". If you are not sure simply contact us and we can check for you.