1 x HTRS-RF(30) Thermostat
1 x TRV10RFM Smart Radiator Control 

(Must be used with SALUS Universal Gateway UG600)

Use this pack if you want to extend any of the packs 1, 2 or 3 to either single or multi-zone heating. Each additional zone can be controlled remotely from your Smartphone, Tablet or PC or locally from the thermostat.