Siemens 194-3083 ROOM THERMOSTAT KIT, PNEUMATIC, DA/RA, FAHRENHEIT, DSP, HEAT/COOL, 2-PIPESiemens 194 3083 Room Thermostat Kit, Pneumatic, DA RA, Fahrenheit, DSP, Heat Cool, 2 pipe This Powerstar Retroline Heat Cool Retrostat Pneumatic Room Thermostat Kit is a 2 pipe, Dual Set Point, Direct Acting Heat 20 psi, Reverse Acting Cool 15 psi with a Fahrenheit scale. Replaces Johnson Controls T 4756 205, 206. Additional Information Mounting2 pipe DisplayDual Setpoint Operating rangeDay Night Measuring rangeFahrenheit