Thanks. I am actually switching a 24v relay. Minimum current is 30mA, 35 or above to be safe. Would it be wise to assume:
1) 500%is at 5v. At 24v will be 6 or 7 times?
2) if the above assumption is wrong purely on switching voltage basis, then passing 5ma in led should make it true-ish? As 5 times is for 1ma!