Datasheet

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'A' : Change the current address of a card. 'A'-instruction should be followed by the
new address (1..255)
'F' : Force all cards to address 1 (default)
'B' : Send a byte. Allows to control the status of all relays in one instruction, by sending
a byte containing the relay status for each relay. (MSB : relay1, LSB : relay8)
4. Program example : see Velleman site (www.velleman.be)
Addressing