... , low voltage to start, +5 V voltage reverse protection;DIP-chip to ensure more reliable communication, RS485 reverse protection, anti-static ... control card LS-D3(ALL) parameters Item No.LS-D3(LAN,USB,RS232)RangeSingle color 2048*64,single color 1024*128 ... sensor, test button, switchPlayerLED Player 3.2Software for LS-D3(LAN,USB,RS232) led display controller Edit static text, single-line ...