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Look for the night vision range of each camera and consider how much area you want to cover. And beware of using an indoor camera to look outside; they can’t usually capture images through a window or after dark. You cannot use cameras alone for home security. That needs a different approach of boots on the ground, regular patrols and guard dogs, proper perimeter fencing, security floodlights, sirens, physical access barriers, electronic barrier breach detection with security cameras being one of the devices used. Considering just the camera part, a security audit is needed to identify weak points, and how to address them one by one with the optimal number and placement of cameras. Apart from physical security, one issue with wireless cameras, and in particular IP cameras is whether they can be accessed from an external network, how frequently vulnerabilities are patched so the window of available exploits remaining viable is short, and how to secure the vast amount of data generated, all to ensure that someone isn’t using it to monitor a range of targets over time to learn patterns/routines. One often sees comments about unexplained “voices” over the camera two way speaker speaking to the kid when the parents are away, and the suspicion that if that’s the case, someone is also watching. This focus on security is missing from this write up. Whether you’re looking to get started with a home security system or you’re looking to upgrade or replace an existing system, The Home Depot has the top brands for just the right level of security for your home and property. Getting Started A good place to start would be with our Home Security Systems Buying Guide to determine what type of system would be best for your home. You can choose from wired and wireless security cameras, systems that are monitored by a third party or yourself as well as smart security systems.

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It is even fair to say that if a contact cleaning company spent all day, if the ductwork was completely exposed and if the ductwork was small enough, a contact cleaning company could technically perform a thorough job if the technician was motivated to perform a thorough job. The contact cleaning method of air duct cleaning is very limited in what dirt, dust and debris is actually pulled out of a ventilation and or HVAC system. 2” diameter vacuum hoses cannot suck up 3” diameter beer cans or soda pop cans. Due to the laws of physics in that a 2” diameter vacuum hose leaves behind all large diameter items, no airflow improvement is ever realized after the service is performed. Clumsy shop vac hoses usually cannot effectively clean through most furnaces burners, hence the ash, dirt, carbon and dust that can be found in these burners typically stay in the burners. This results in no efficiency improvement when cleaning out the burners, because the shop vac hose could not fit inside of the burners to properly clean it as compressed air or nitrogen can. Most ventilation and or HVAC systems have portions of ductwork that is not easily accessible due to portions of the ductwork being drywall finished around. Should this be the case at any given jobsite, a consumer and or customer must realize that a large portion of ductwork will not be cleaned as a result when the contact cleaning method of air duct cleaning is employed. Typically a shop vac hose can only reach up to 15’ before the hose just curls up. Some trunk lines may stretch out to over 100’ in distance, which means 15’ would be cleaned and 85’ would go untouched. 90 degree turns will almost always make the shop vac end its descent in cleaning down a pipe because the shop vac hose cannot be turned without physical intervention.