Untested unit due to missing connectors.

"The D350AA-1C Receives Power, Sensor, and Setpoint Information from the A350 Temperature Control. A 3 Digit LCD Display Gives Continuous Readout of the Sensed Temperature in Fahrenheit Scale. Pushing the PRESS FOR SETPOINT Button on the Front of the D350 Causes the Setpoint of the Adjoining A350 to be Displayed"