MasterLink Software for LTR8 Series Master Clock. Read details, below.
Windows software, most often used when you have multiple buildings and complex schedules, or two or more LTR512-8 clocks. This is a single user license, for ONE master clock.
Upgrade to MLINK-P for up to 12 Masters, 100 schedules. +$100.
Otherwise programming is done at the master clock itself, on the control panel.