t222 Wind Transducer comm issue

[riosbornejr]

I ordered a T222, although it says model T210. I wanted to add it to my raymarine wireless system. I got it synced and talking. Then I had issues with the remote and had to replace it and had to auto-network the remote and all gauges in and did that except forgot the t222 at the top of the mast. So then brought it down a month or two later and re did the auto-network again trying to add it and an additional dual maxi. All networked except the t222 wind transducer. How do you open it to check the battery as I cant get anything from the t222 wind transducer. Or am I doing something wrong in the auto-network process.