""LOGIC CONTROL LD9000. Advanced Functionality and Value The LD9000 is a 2x20 line"," 9.5mm character height display that comes with much functionality that simply is not found in other vendors' offerings. """"Smart scrolling", user-definable characters, and a built-in real-time clock are all standard features of the unit's firmware. In addition, the LD9000 comes with a wide variety of interfaces, can emulate many popular command sets, and has better visibility due to an optically matched lens and wider character pitch. Best of all," this premium pole display is also one of the most affordable on the market. SERIAL CONNECTION.""