You don't strictly need training to use it, but training is still strongly recommended if you want to know how to use one effectively and have the best chance of survival.
At a minimum, you need to know how to perform CPR in between shocks (or if you don't have a shockable rhythm). Ideally, you should know how to perform good CPR. The higher end ones will coach you on performing CPR, but that's definitely not universal.
Not to mention you need to figure out pad placement, possibly shave someone's chest (if they're excessively hairy), and delegate calling 911 to someone.
When seconds count you don't want to be spending minutes figuring all this out.
SBA.gov blog > Review Your Workplace Safety Policies:
> Also, consider offering training for CPR to employees. Be sure to have an automatic external defibrillator (AED) on site and have employees trained on how to use it. The American Red Cross and various other organizations offer free or low-cost training.
At a minimum, you need to know how to perform CPR in between shocks (or if you don't have a shockable rhythm). Ideally, you should know how to perform good CPR. The higher end ones will coach you on performing CPR, but that's definitely not universal.
Not to mention you need to figure out pad placement, possibly shave someone's chest (if they're excessively hairy), and delegate calling 911 to someone.
When seconds count you don't want to be spending minutes figuring all this out.