## 4 Discussion  
The paper presents a study case associated with the implementation of low-cost monitoring networks, ease of operation and maintenance, as a tool for the control and evaluation of biodiversity  
Figure 4: Control circuit diagram. and climate change in a protected area [24]. In addition, the autonomous stations are considered passive mechanisms of observation and control, which can be used as an appropriate solution as part of the sustainable management of protected areas due to their low environmental impact and use of resources renewable energy consumption under the distributed generation criterion. Moreover, it can be mentioned that prevention studies and construction methods for the installation of autonomous stations, on the trail, are of vital importance for the present ecosystem it is already shown that the inhabitant species would move due to invasions of the population [25]. The growing need to manage biodiversity with a more timely and relevant knowledge of the biome with minimal degree of human intervention and with environmental awareness incrementing that requires greater access to Information on the state of biodiversity in the world [26]. This scenery, leads to find engineering solutions that allow continuous adaptation and improvement according to information needs and technological advances that allows us to alert on variations in the conditions ecosystems and species including possible changes in weather. Due to the complexity of the area being a protective forest, the native species of the place (fauna) must be protected from the hunters who enter the trails, at the same time uncontrolled tourism that damage in some way the flora of the place. This is why audio and video systems have been installed in strategic points, of the forest not only to identify the fauna and flora of the place, but also to control the problems previously exposed. While true, the solution adopted for the energization of these systems was based on the construction and installation of small photovoltaic stations of 50 W with a base height of 3 m (component of the installation; 50 W polycrystalline photovoltaic, inverter, regulator, 7 A battery), and in addition the \"Mirador\" sector was used for a 200 W installation being a strategic point, so that visitors can make use of energy to charge low-capacity electronic equipment. For the construction of such stations it was necessary to comply with environmental standards regarding non-harmful material and degradable to the environment, color, height, visual impact analysis, among other variables that may affect the natural ecosystem. The use of photovoltaic systems to some extent is an energy-acceptable solution for urban and rural areas that allows energy savings in housing. [27] indicates that the estimating solar PV potential at a city scale is very useful as a support system for policy-making and strategy planning, it also has several disadvantage, just as; integrate decentralized solar PV electricity production with energy storage and electrical grid so as to manage the energy demand of neighborhoods or communities. A typical photovoltaic solar system consists of four basic elements; photovoltaic module, charge controller, the inverter and battery when necessary [28]. The monocrystalline (m-Si), polycrystalline (p-Si, also referred to as multicrystalline, mc-Si) cells are the most used on a commercial level [29; 30]. From what the author indicates, our system works with polycrystalic photovoltaic panels (it registers higher demand in the national market), although they have an efficiency of 15%, we are supplied by the energy system at the stations. On the other hand, justifying the issue of not using centralized energy systems this project for reason that are recommended for case isolated communities that have a real lack of electricity, and to some extent it is advantageous to install photovoltaic solar panels instead of investing in expensive infrastructures for connections to the grid of 3 to 5 homes located in remote areas.