Mixing RCS tr40 an HAI RC100 with m1


I already have a RCS tr40 that i bought long ago before they became expensive and the lower cost hai stats.

Does anyone know a reason they can be both controlled by the m1?



Senior Member
just guessing, but from my recollection of how the ELK is setup for a thermostat(s), it is for one flavor at a time.

If you are interested in selling the TR40, give me a PM. I have a TR40 in my house and now need either a TR16 or TR40 for my barn. Don't need a TR40 (over the TR16), but if the price is right, might help both of us.


Senior Member
You CAN have different manufacturers of thermostats into separate M1XSP's. We suggest M1XSP address 1 connects to HAI thermostat addresses 1-4. The RCS thermostat addressing is all handled in the Thermostat with up to address 16.