The GUARDIAN-2 ECO model works with butane or propane gas. The sound explosions it produces help protect crops, fruit trees and other areas from which to terrorize birds and / or any other animals that are harmful to crops. The bursts of sound can be adjusted to the desired frequency, ranging from one minute to half an hour. Thanks to the special configuration of the rule, the explosions are always at 120 decibels, protecting an area between 3 and 4 hectares, always subject to the type of cultivation and topography. The machine is activated by a piezoelectric system and the fact that the rest of the machine is fully mechanical helps to minimize any defects. As with all our models, the engine is zinc-plated, which means it will continue to operate even in very adverse weather conditions. Thanks to the reliability and efficiency of our products, as well as our extensive experience in their production and distribution, we can guarantee that this is the best method for the protection of your crops.