Key inputs are transmitted through SPI or RS232 protocol.
A built-in 20 x 4 character LCD on which I2C/SPI or RS232 protocol can be displayed
Software-controlled backlight ON/OFF
Four (4) on/off LEDs
A buzzer sound that can be controlled down to milliseconds
Key buzzer sound ON/OFF feature
All keys’s working condition and each key value can be checked.
RS232C communication speed can be selected from 4800 to 115200 bps.
CuNET(I2C) address that can be selected from 0 to 7.
Size(WHD) 7.87 x 4.33 x 1.34 inch
All prices are in USD