Diy Laser Rangefinder I Am Looking For A Good Diy Home Security System With Indoor Lasers And A Siren Anyone Know A Good Site?

I am looking for a good diy home security system with indoor lasers and a siren anyone know a good site? - diy laser rangefinder

Thank you to my family was a victim of theft, if we were not home during the day. We already have a dog and now we need security. I do not want a system that someone else controls your monitor if you are a burglary company.Any any information communicated on the homepage that security would be great.