@scorillo47 Please read the manual - for measurement group 0 the data is deleted a few seconds after next power-up. If you change to other group (1..9) the data will be stored until you clear the group. Also - everything on your screenshoot is set to 0 (even temperatures). Maybe you are suffering an issue with communication with the device, mentioned earlier?
@ddanijell I have done some reverse engineering on the protocol.
1. The baudrate you set over bluetooth is not taken into account - this is only virtual baudrate, and physical output baudrate at the meter board is fixed. Original software sets baudrate to 9600, no parity, 1 stop bit, 8 data bits, no flow control.
2. The UM24C protocol is not a character protocol, but it is binary protocol. As you send byte 0xF0 You will get some bytes in replay. I am attaching some results of my work, maybe someone will write a custom app to drive this tool.
3. Also maybe if you buy version W/O bluetooth you can use RX and TX pads on main board.
I do not guarantee anything about presented information - as this is not official documentation you are using it on your own risk.
@RD Tech - maybe you will publish official documentation of the protocol, as i have not been able to figure out meaning of some bytes. Also can you publish LabVIEW source code of the app? I think the error mentioned above is LV related, rather then device related. I have to admit that device is well manufactured - all PCB edges are clear, enclosure fits perfectly. Also connection between main board and BT board is done nice.