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Hi

i'm trying to connect an HEM2 sensor to the pc, i notice the device send his actual values every xx minutes when i just open the port


3411 02/06/2012 23:06:14 IRP_MJ_READ UP STATUS_SUCCESS 01 0e 00 04 00 03 08 31 05 04 64 00 15 2a 74 61
4179 02/06/2012 23:18:14 IRP_MJ_READ UP STATUS_SUCCESS 01 0e 00 04 00 03 08 31 05 04 64 00 12 1c 6a 4e
4275 02/06/2012 23:30:14 IRP_MJ_READ UP STATUS_SUCCESS 01 0e 00 04 00 03 08 31 05 04 64 00 15 71 6e 20

as i can see the last 4 bytes change every time, last byte is the CRC so the 3 bytes before should be the actual meter value
does anyone know how to convert that into an readable value ?

I also have an everyspring AN158 witch report power of an device, there is was easy to reverse the sting

010E000400020832022112 0129 0000D4 Usage: 297 Watt the 0129 is actual power consumption 0x01 * 256 + 0x29 = 297 watt

I hope someone knows how to do this for the HEM2, since i cannot find any protocol information at all :S

There is a little about the protocol here http://www.digiwave.dk/

i already checked that site, but there is no reference to multi-level sensor algo