Engineering dense model [20 meters drooping 0.3 meters]; Engineering dense model [20 meters drooping 0.6 meters]; Engineering dense model [20 meters drooping 0.8 meters]; Engineering dense model [30 meters drooping 0.3 meters]; Engineering dense model [30 meters drooping 0.6 meters]; Engineering dense model [30 meters drooping 0.8 meters]; Engineering dense model [50 meters drooping 0.3 meters]; Engineering dense model [50 meters drooping 0.6 meters]; Engineering dense model [50 meters drooping 0.8 meters]; 100meter, 0.3meter; 100meter, 0.6meter; 100meter, 0.8meter; 24v, 20meter, 0.3meter; 24v, 20meter, 0.6meter; 24v, 20meter, 0.8meter; 24v, 40meter, 0.3meter; 24v, 40meter, 0.6meter; 24v, 40meter, 0.8meter; 24v, 80meter, 0.3meter; 24v, 80meter, 0.6meter; 24v, 80meter, 0.8meter; Solar-powered, 5meter, 0.8meter; Solar-powered, 10meter, 0.8meter; Solar-powered, 15meter, 0.8meter; Solar-powered, 20meter, 0.8meter; Engineering-intensive model [3 meters down by 1 meter]; Engineering-intensive model [3 meters down by 2 meters]; Engineering-intensive model [3 meters down by 3 meters]