This cable has a special ground connection to Pin1 for use with the Master to the first slave. One per system is required.
This cable is used when you have multiple Q series BMS's connected to a REC BMS MASTER UNIT 9M. It is 1M long and include a 120 ohm Terminator in the DB9 end. For use with the DB9-RJ45 Adapters that get mounted on the slaves
Available in 3 ft or 6 ft lengths (1-2M) CAT6
Use an RJ45 Coupler to extend it longer if needed