Format of messages sent by emonTH



I developed an application that listens on the serial port for messages received  from an emonTH (with thermometer only). I use the RFM12Pi as receiver.

The format of messages I saw until now was:

G <group_id> <node_id> <temp_lsb> <temp_msb> 0 0 0 0 <volt_lsb> <volt_msb>

Since yesterday, the format of the messages changed to:

<node_id> <temp_lsb> <temp_msb> 0 0 0 0 <volt_lsb> <volt_msb>

Are there two different protocols used by the emonTH? If yes, where the protocol is selected?