Set Digital icon Set Digital Toggle a digital I/O port between TTL low (0V) and high (3.3V/5V) in ARC; select board and port, simple on/off control-signal only. Try it →

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#1  

Manual for EZ-B If your refering to the ez-b, 17V, however if your refering to the small adaptor that is part of the kit you should be good up to the max if not easily more.