Critical infrastructures are the systems, networks and assets that are essential to the functioning of a society and its economy. Various areas of infrastructures include energy supply, oil and gas, mining, telecommunications, airports, water and wastewater treatment, food production, production of goods and services. Terrorist threats on critical assets have made intrusion detection and perimeter security a priority for the private sector and governments worldwide. To ensure security, traditional solutions included CCTV cameras and patrols can be done, but for night surveillance requires additional equipment like different Electro-Optical Systems and Handheld IR Cameras. The Electro-Optical Systems with 360° protection and outdoor perimeter intrusion detection provide exceptional day and night security for many of governmental buildings in the world and varied applications.