Siemens 194-3042 ROOM THERMOSTAT KIT, PNEUMATIC, DA, FAHRENHEIT, DSP, DAY/NIGHT, 2-PIPESiemens 194 3042 Room Thermostat Kit, Pneumatic, DA, Fahrenheit, DSP, Day Night, 2 pipe This Powerstar Retroline Day Night Retrostat Pneumatic Room Thermostat Kit is a 2 pipe, Dual Set Point, Direct Acting, Day 13 psi, Night 18 psi with a Fahrenheit scale. Replaces Honeywell TP971A1003, 1029, 1037, 1045, 1086. Additional Information Mounting2 pipe DisplayDual Setpoint Operating rangeDay Night Measuring rangeFahrenheit