The DGH A2000 is a bi-directional RS232/RS485 converter. RS485 is recommended when many DGH modules, or other addressable devices, must be connected to a host computer over long distances. The A2000 RS232/RS485 converters allow communications bus lengths up to 4,000 feet and baud rates up to 115.2K baud using one twisted pair of wires.

The A2000 may also be used as an RS485 repeater. RS485 repeaters re-amplify the RS485 signal when transmitting >4000 feet. They also allow more than 32 devices to be connected to the RS485 bus.

Therefore, host software written for half-duplex RS232 may be used without modification. The RS485 bus control is completely transparent to the user.

The A2000 is DC powered: 10 to 3Vdc, unregulated.

The A2400 is a bi-directional RS232/RS485 converter that provides RTS and CTS support. RTS (Request-to-Send) and CTS (Clear-to-Send) are handshaking signals for  where data flow must be synchronized to a communications device, such as a radio or leased line modem. 

The A2400 is DC powered: 10 to 3Vdc, unregulated.

The A2400 series module can be mounted on a DIN-Rail using the MK-1 mounting kit.