# 6.1.5 Keypad switch

**Introduction**

Keypad switch is designed to input data manually; this object need to work with the Keypad. User could assign letters or numbers for each switch, when the switch is triggered the data will input to the textbox.

**Description**

![](https://3950998874-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2Fpi-series-user-manual%2F-Luq2qrGWRoBQM-khisX%2F-Luq6Dv9Pc0p-nxrO9qB%2F8.png?generation=1575013381148457\&alt=media)

**1) Control bit:** This is for control operation, such as \[Enter], \[Delete], \[Space], \[Esc] and so on;

**2) Allow input:** It supports input with ASCII character;

**3) Enable Beep:** It is for beep function, enable or disable;