In a correctional environment, security sensors can be used to immediately detect prison escape attempts. A quality outdoor security system demonstrates a significant return on investment by reducing the risk of theft, damage or personal injury. Outdoor sensors can be used either to complement indoor security sensors or as primary security in situations where indoor security is not feasible. Able to protect assets at both manned and unmanned sites, outdoor security sensors are a practical solution for remote sites where guards are not a viable alternative.
Outdoor sensors face challenges not found in indoor security situations. Environmental conditions, such as temperature extremes, rain, snow, animals, blowing debris, seismic effects, terrain and traffic, must all be taken into account. When functioning under these adverse conditions, the system must continue to maintain a high probability of detection while minimising false alarms (alarms with unknown causes) and nuisance alarms (environment-related alarms), both of which can reduce confidence in the security system’s performance.read more about Perimeter Security Options.
The “vulnerability to defeat” characteristics of different sensors is important to consider. The hidden nature of totally covert sensors makes them difficult to avoid and less subject to vandalism. Intruders are not even aware of their presence. On the other hand, some sensors present an imposing appearance that can provide a deterrent effect. Volumetric sensors create a large invisible detection field that makes bridging difficult.
Closed circuit television (CCTV) cameras are an important element in outdoor security. CCTV assessment is used to verify whether or not alarms reported by intrusion detection sensors are valid intrusions or false / nuisance alarms, ensuring that only valid alarms are responded to. Use of assessment is especially important for remote sites where response to nuisance alarms can be particularly costly.