What happens if the door closes while someone is in the way?
For the residential Model 133, it will push against the obstruction for a short period of time (adjustable, 1-5 seconds), then stop pushing and enter the delay state. After the delay period it will try to close again. It will continue this cycle until the obstruction is removed.
For the commercial Model 233, it will push against the obstruction with a light force for about 30 seconds, then turn off the motor. At this point the door can be closed manually, or if the park feature is enabled the activation button can be pushed again and the door will close.