Siemens 192-3054 ROOM THERMOSTAT KIT, PNEUMATIC, RETROLINE, RA, FAHRENHEIT, DSP, D/N, 2-PIPESiemens 192 3054 Room Thermostat Kit, Pneumatic, RETROLINE, RA, Fahrenheit, DSP, D N, 2 pipe This Pneumatic Thermostat Kit is for a Powerstar Day Night Retrostat with 2 pipe, Dual Setpoint, Reverse Acting, Reverse Acting Day 18 psi, Reverse Acting Night 25 psi, Fahrenheit scale. Replaces Powers 192 205. Additional Information Mounting2 pipe DisplayDual Setpoint Operating rangeDay Night Measuring rangeFahrenheit