You need the Hive dual channel receiver (SLR2).
The backplate of the LP722 has the same layout as the Hive, but I don't think the backplate is compatible.
Remove the front of the LP722 and you'll see 6 terminals - L, N, 1, 2, 3, 4. You will certainly have wires in L, N, 3 and 4, and maybe in 1 as well.
Just transfer all the wires to the same ones on the Hive backplate & you're done - easy