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The TR40 and TR42 are 2-wire, non-polarity sensitive, Sylk bus communicating wall modules, which communicate with Spyder® and some ComfortPoint™ programmable controllers. The TR40 and TR42 are simple LDC temperature wall modules with basic setpoint, override, and fan options, and are designed for a broad range of applications.
Models available with display (TR42) or without display (TR40).
TR42 models have configurable interface: temperature setpoint adjustment, override, fan (with FCU app)