Legrand data key for the AlphaRex³ series. The data key can be used to read switching programs into the clock. To do this, select the READ KEY function on the clock. The data key can be easily programmed using a PC. Using the KEY-WRITE clock function, programs can be transferred from the clock to the key, so programs entered on one clock can be easily and quickly transferred to other clocks and/or backup copies can be created.
