Do I need to use a resistor with this SSR?

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sremick

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So I have a solid-state relay I'm looking to control with a Teensy 3.2. Here's the datasheet:
http://www.farnell.com/datasheets/3157355.pdf

I chose it specifically because it can be triggered w/ 3V. However it's unclear from the datasheet if I need to use a resistor (to avoid blowing the LED). Google searches produced conflicting general info... some say definitely yes, others say that most SSRs you do not need a resistor.

Thoughts? And if a resistor is needed, recommended value?
 
The question isn't if it's ok to send it 3.2V. It's whether I need a current-limiting resistor to not blow the triggering LED.

Its saying the control voltage can be 3V to 10VDC. What can that mean other than input 4 can be upto 10V more positive than input 3?
If that's the case, you don't have to worry.
 
I find that datasheet quite lacking in information. But it says the max current is 15ma. The Teensy 3.2 suggests a max of 10ma on an output pin. So to be safe, go with 10ma which would suggest a 300 ohm resistor as a starting point.
 
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