IR transmitter on the front of the NVR

Hi All,
I setting up a HDMI Extender on my NVR which is upstairs and give me the ability to view on the front room tv.
However for me to use the NVR remote, the HDMI extender has a IR transmitter and a IR receiver
my question is where about is the best place to stick the IR transmitter on the front of the NVR to get the best signal .
The NVR is a DS-7616NI-I2/16P.