You would need to check if the floor sensor already installed is compatible.
The specification of our probe 10K NTC at 25C
Request the specification from your original thermostat supplier and ensure it matches.
Our remote sensors are available here
We have the remote floor sensor available here
https://www.heatmisershop.co.uk/remote-sensor-probe-3m/
We have the remote air sensor available here
https://www.heatmisershop.co.uk/heatmiser-thimble-sensor/