My unit is speaking Spanish how do I change the language back to English?

On the C475 and C495 select the tone using the menu button. Press and hold the menu button for 5 seconds to go into menu mode. When menu is displayed press and release in step increments until the English voice/Spanish voice is displayed then use the select button to select desired language.

On The Judge Use the Menu function to change the Language setting.
All other models press and hold the Dim button and power up the unit.