Yes, you can daisy chain up to eight Neets Switching Relay – 4 or 8 units, providing you with up to 64 relay options.
However, you do need to set a different UNIT ID for each 8-Relay.
Use this code: NEUNIT=1,UNITID=13<CR> Change 13 to the UNIT ID you need.
and remember to save the change with: NEUNIT=1,SAVE=TRUE<CR>