Wands = No.
Scrolls = Maybe.
For wands, only a single UMD check (DC 20) is needed:
Use a Wand, Staff, or Other Spell Trigger Item: Normally, to use a
wand, you must have the wand's spell on your class spell list. This
use of the skill allows you to use a wand as if you had a particular
spell on your class spell list. Failing the roll does not expend a
If you do not meet the ability score requirement (int for wizard spells, wis for divine spells, or cha for sorcerer and bard spells) of the spell (10 + spell level) you will need to also make a UMD check to 'emulate an ability score' in addition to the UMD check required to activate the scroll.
Use a Scroll: Normally, to cast a spell from a scroll, you must have
the scroll's spell on your class spell list. Use Magic Device allows
you to use a scroll as if you had a particular spell on your class
spell list. The DC is equal to 20 + the caster level of the spell you
are trying to cast from the scroll. In addition, casting a spell from
a scroll requires a minimum score (10 + spell level) in the
appropriate ability. If you don't have a sufficient score in that
ability, you must emulate the ability score with a separate Use Magic