Signal Converters Showing all 3 results Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low 4-20ma to RS485 Converter, A/D Converter with Modbus Read more Analog 4-20mA to RS232 RS485 Modbus Converter Read more Sale! SICHD909-HA1 Modbus TCP / HART converter $690 Original price was: $690.$676Current price is: $676. Add to cart