Product application: Mainly used in all kinds of unsupervised or semi supervised gas
stations.
Product performance 1. hardware interface serial port R232 standard interface; 2. the keyboard is connected to the computer serial port, and the
USB interface is powered on; 3. after the keyboard is connected, the power on will "tick", and
the keyboard display will show "welcome to use";
4.When you press 1234567890, the number will be displayed on the
screen. Press the "Cancel" key, the number on the screen will be
eliminated. Press the "correct" key, one by one, in order. Press
the "confirm" key, the number will be transmitted to the computer
through the serial port;
screen performance 1. the screen is 128 * 32 dot matrix; 2. screen is Chinese display;