Tekmar Controls Setpoint Control, User Interface: LCD Pushbutton, 2 Stage, 24 VAC, -85 to 302 deg F Sensing Range, NEMA 1, Plastic/PVC, White, 2-7/8 in W x 7/8 in D x 4-3/4 in H.
Digital display2 stage operation or heat and cool controlPulse width modulation control