Solution to read multiple RTDs Wireless into Recorder or Scada?

I am working with a customer that monitors very cold freezer temperatures (RTDs -269 to 260°C). Currently the RTDs are hard wired to a Digital chart recorder on analog input card. Unnfortunatly the freezers are frequently moved around, so a wireless solution would be ideal. The Recorder can read data thru the analog input cards or Modbus TCP. I would prefer to read the RTD data via Modbus TCP. There can be up to 48 RTDs per recorder. One RTD per freezer. Would I be able to use multiple Long Range IoT Wireless RTD Temperature Sensor with a Modem to accomplish this? If so can you supply the part numbers needed.

Does your scada system support MODBUS RTU ?
if yes I will recommend following the hardware