Three switch panel.. Bottom switch is 3 position switch for 2 functions.  4 functions total.

Broan NuTone P77DW

77DW Four-Function Switch (White)

Four function control

Features:

Designed for use with SensAire® Series

Single switch provides three settings for fan sensor (On/Off/Auto)

Remaining switches for light/night-light and heater

Fits single-gang opening

120 VAC Amps each rocker - 15, 15, 5 (20 amp total)

Designed for use with SensAire® Series

Single switch provides three settings for fan sensor (On/Off/Auto)

Remaining switches for light/night-light and heater

Fits single-gang opening

120 VAC Amps each rocker - 15, 15, 5 (20 amp total