This 400 amp shunt is an accessory that can be used w/ various Sterling Power Products including: Battery Monitor / Power Management Remote Display (part # pmp1) & Alternator to Battery Charger Remote model (ABRC).
The PMP1 battery monitors come with one shunt. Up to 4 shunts can be fitted to one PMP1 battery monitor, and this will allow the user to measure 4 seperate current readings on the remote display.