According to our own research, it is not possible to connect a second monitor to this model. You would have to buy a completely new set. However, you have to take care that it is a digital device and that the two devices do not transmit on the same frequency and can therefore interfere with each other. It is recommended to use a different model than the existing one, but it does not matter if it is from the same manufacturer, because the different models do not transmit on the same frequency.