ADJ WiFly EXR BATTERY

ADJ has terrible support. These stopped charging after two months. I haven't been able to use them since. Wiring stuff is a pain, but until they come up with a more reliable product with better support I would not recommend these.

Works every time, no hassle. Easy to understand how it works.Tested 80m line of sight and everything went ok. Even if battery dies i guess it will be easy to replace it with a little google search.

very good build quality. the wireless range is big and no delays on the light fixtures!!! excellent choice!!!

Good reception, relatively easy to set. Heavy, takes long time to fully charge. Recommended.

The magnet on the back is a particularly nice feature, the antenna is exchangeable for any SMA 2.4ghz antenna making it easy to replace or even upgrade!

I've used these for a number of years for sending DMX signals across a room... my current set up has one as a transmitter sending a single universe to 3 receivers. The boxes hang on the truss next to the first fixture.
The ability to change channels as required is very useful when you've also got wireless IEMs on stage and you need to ensure that there's no interference between the two.
It would be even better if there was an auto-search facility for a clean channel, but at this price you can't complain.