This is a replacement keypad and button overlay for those worn out buttons on your indicator. With years of repeated use, it is not uncommon for the electrical contacts in the a button key to go bad. Generally it’s the Power Button or the Zero Key. Regardless, this is the replacement.
IMPORTANT: Select LED (orange/red numbers) or LCD (black back-lit numbers). These keypads are NOT interchangeable. If you have an LCD Display, you need a LCD keypad. If you have an LED Display, you need an LED keypad. They are different products.