# RS232 Splitter Capable of Transmitting/Receiving data to one device and only Transmitting to another

I was wondering if it is possible to have a RS232 splitter that is able to split the data into two RS232 connections, and allow for one of the connects to still be able to transmit data back through the splitter to the source.

So the problem that I am having which has led to this question is that I have data coming from an ECU in my rallycross car, via an RS232 cable, and I need to split this data. One device is a RF transceiver to stream the data to a laptop, this device would need to be able to receive and transmit data to the ECU. The other device is a DAQ system that then feeds into a driver display, the DAQ only needs to receive data and does not need to transmit back to the ECU.

TX1 ------- RX2