Launch Kontrol firing system is a consumer type basic but very reliable remote firing system. As the Youtube video tube shows longer safety distance can be acheived by using longer Cat5 cables up to 75ft. A typical Cat5 cable on Ebay costs a £5er. We use Cat5 cables in our professional systems. Each kit can fire 4 individual fireworks and by adding more kits in tandem (as picture), you can acheive a very useful and reusable system every year. The actual firing clips are the only consumables you need to replace and the battery of course.
