The signal strength is mostly an arbitrary 0-100% number that we receive from the watches. this strength is basically a score between some thresholds of decibels of signal the watch receives.
The currency should popup eventually for the balance. It’s just that we currently only sell the watches in countries that use the Euro. It does seem though that we will have to add a currency field soon.
Also amazing work on the plugin 
I’ll take a look at it when I’ll have some free time, the least i can do is provide the cmd_codes so you guys won’t have to guess them. they differ a bit from device model to device model but we are in the process of moving away from the old architecture and we are trying to make these the same for all devices we have on offer.