For you it would be a stop loss. Stop losses wit execute no matter what once the price hits the point you have said to sell it at which is why it usually fills below that price by a little depending on the broker. Stop limits may not execute and are risky here in these crazy pennies.
A "Stop Limit" can be dangerous in that we see it all the time. The Market Makers will see a Order to sell at a specific pre determined price and they will literally "Walk" the pps down to that amount to grab your share and then the pps goes right back up. It is seen all the time. You may come home from work and see that you were sold out yet the pps share didn't really decrease from the previous day. There is no great way to. Just be carful in setting stop limits as that too can backfire on you. Hope this helps.