I am considering installing a wireless alarm system in my house. Most of the ones I am looking at (Yale e.g. IA-210) are 868Mhz and I understood this was a better frequency than 433Mhz as it is less 'busy' so less prone to interference.
Unfortunately, I have just discovered that the wireless thermostat that controls our central heating system also operates on 868Mhz.
Please can anyone advise on whether it is likely that there will be interference between the thermostat and an alarm system operating on 868Mhz?