This Keypad icon is made in Material Design style developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 4,400 icons, all in the same style and quality.
It is a series of ten rectangles drawn separately from one another. They are arranged in the same pattern as a cellular phone keypad, with only the number buttons displayed. It is a three by three pattern, with one button underneath the pattern and centered.