Siemens 192-3044 ROOM THERMOSTAT KIT, PNEUMATIC, RETROLINE, DA, FAHRENHEIT, DSP, D/N, 2-PIPESiemens 192 3044 Room Thermostat Kit, Pneumatic, RETROLINE, DA, Fahrenheit, DSP, D N, 2 pipe This Pneumatic Thermostat Kit is for a Powerstar Day Night Retrostat with 2 pipe, Dual Setpoint, Direct Acting, Direct Acting Day 18 psi, Direct Acting Night 25 psi, Fahrenheit scale. Replaces Powers 192 204. Additional Information Mounting2 pipe DisplayDual Setpoint Operating rangeDay Night Measuring rangeFahrenheit