Just another update for those looking at the new Juntek.
First, be aware of "operator error". If you accidentally toggle it to "off" (the icon next to the lock symbol), it will give you crazy readings. Most things will still work, but it will no longer count the amp-hours correctly which will make you think something is wrong with it.
Next, and this is a biggie. The Bluetooth range for the app is not very good (like 5 feet), especially if it is near any equipment that may be interfere. Once the app looses connection you have to manually reconnect it. This is important to me because I wanted to be able to use the app in the house. Since that won't work due to the range, I installed a mirroring app on the phone I dedicated to this, and I can then mirror the app on my laptop via wifi. Great.....until it decides to disconnect and you have to go back out to re-connect. It would be nice if the app wound simply auto-reconnect.