This is great. I've had other IR senders in the past that have disappointed due to inconsistencies in sending messages or the fact that you have to angle the transmitter to be just in front of the device you're trying to control. Not easy in a compact cupboard.
However, this one is great. The visible receiver is smaller than it appears in the photos and it not noticeable when placed next to my TV (although it would have been nicer to be black rather than the dated silver).
The transmitter has a cable with 3 separate transmitters attached. This was ideal for me and I draped this cable in front of the devices I want to control in my cupboard. One thing to note is that because it is one IR transmitter cable and not 3 separate ones, the devices do need to be close to one another (eg in a vertical line on a shelf). Distributed appliances might struggle here.
Once put in place I simply plugged in and it just worked. I'd recommend this if you're after an IR sender.