ARTHUR HOLM DynamicSpeaker User Manual page 21

AHNET PROTOCOL
CB1
BITE
CLOSED
OPENED
PROTECT
NO PROTECT
BUT_EN
BUT_DIS
To send an order to all the devices, you must use the address:
F7 Hex. (Byte1)
In this case, the units do not send a reply.
21
7 6 5 4
1
0
3 2 1 0
1 0
0 1
0
1