Through Beams Garage Door Opener

Hello everyone,
I want to make Through Beam With a Transmitter Laser Beam and a Receiver Laser Beam. Trying to achieve a Transmitter distance 240 feet away from Receiver.

Any Ideas what I should Purchase?
How I should start or where I should Start?

Thank You
John B

Hello Shannon,
No, I don't know how stupid it is. Thank you for telling me how stupid it is. I cant stop laughing and saying to myself at least there was someone nice to tell me not to do that. GOD BLESS You

Are you wedded to a laser solution? Banner makes a thru-beam good to 200m but it's not a laser. I'll warn you now, that's not bargain bin equipment.