... voltage reverse protection;DIP-chip to ensure more reliable communication, RS485 reverse protection, anti-static protection;Hardware watchdog to avoid ... of 1/16, 1/8, 1/4, static routingControl card with search function , the screen parameter setting, scan settings, read ... for LS-D3(LAN,USB,RS232) led display controller Edit static text, single-line text, multi-line text ,digital and analog clock time ...