Socomec Diris A20 Jbus / Modbus RS485 module 48250082 Socomec Modbus/JBUS Communications plug-in module for the Diris A20 meter.  Features Provides an RS485 Modbus/JBUS interface to allow all meter parameters to be read remotely.  This module is not suitable for A40, A41 or A60 meters - See more at: https://www.energymonitorsuk.co.uk/socomec-a20-modbus-module#sthash.CWEuMs9k.dpuf