Slave vs. Master
Every board is a "Master" by default, meaning it
want's to start
it's GREEN cycle first. When
linking multiple boards, only one board
can start GREEN. It doesn't matter which board starts green, so
any board can be chosen as the "master". Therefore, the other
board(s) must be set to "SLAVE MODE".
Step 1> Remove
power from board being set to SLAVE MODE.
Step 2> With the power OFF, hold
down the black TIME SET button. While holding the TIME SET
button down, apply
power to the board and wait two seconds, then release the button.
Step 3> Remove power from board.
If you were successful, the board will power up with the RED light on
instead of the GREEN light.
To set the board back to it's original state as "master", simply follow