88980111,USB INTERFACE WHT FOR EM4 USB-B
88980112,BLUETOOTH INTERFACE
88980114,MEMORY INTERFACE
88980116,KIT BLUETOOTH INTERFACE & DONGLE
88980120,MODBUS RS485 24VDC FOR EM4 BLK
88980121,MODBUS RS485 24VDC FOR EM4 WHT
88980122,EM4 INTERFACE RS485 POLAR 24
88980123,EM4 INTERFACE RS485 W/O POLAR 24
