Sears Craftsman (Two Questions)

Hello all! Thanks in advance for any help!

First, is this garage door opener able to be equipped with a motion sensor to stop the closing action if the sensor light beam is interrupted?

Second, this opener works on a “dip” code for wireless openers. Do they make battery op keypad that I can afix to the house and that opens once the correct code I entered? I bought one but it works by using a “learn” function, which this opener doesn’t have!

Thanks to all who can help!