What do all the buttons on the KDC20 scanner do?

There are four buttons on the KDC20 with different operational purposes.

The large, center button is the SCAN button.

The two smaller buttons on the left side are the UP button (this activates RECONNECT feature) and the DOWN button (this activates DISCONNECT and KEYBOARD TOGGLE features).

The single button on the right is the DELETE button, which will erase the last scanned data.