Light Rail Switch Stop stoppers (slide nuts/ thumb screws). Compatible with Light Rail 3.5 and Light Rail 4.0, six come in a bag.
Suggested travel distance - About 3’-4’ (1m) Switch Stop to Switch Stop. This will likely light up the 6’6” (2m) Rail length nicely, as half the light from your lamp goes beyond that stopper setting and this happens at both ends of the lamp’s travel, with grow light pattern coverage going even farther.
Suggested time delay setting - At 3’-4’ (1m) of travel, a time delay setting of about 20-30 seconds might be just right. You can then see over time if any adjustments are needed.
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