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Basic DIY home security systems start at about $225 and top out at $800 or so. If you add wireless smoke/heat detectors, plan to spend about $1,300 for DIY alarm systems. That’s about half of what a professional alarm company would charge. Monitoring service, which notifies the police or fire department, can cost $40 or more per month. But if you shop around, you can get it for about $10 per month. Some alarm installers recommend eliminating window transmitters and installing motion sensors instead.

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Although most home security systems include alarms or sirens in their hubs, you can buy separate sirens to place closer to entry points for maximum effect, which can deter intruders and alert your family of a break in. If you buy smart plugs and smart lights for your home security systems, they can work together to deter intruders – when your system detects an intruder, it can turn your home's lights on. More Home Security Guides: The Best Wireless Security CamerasThe Best Home Security Systems and MonitoringThe Best Multi Camera Home Surveillance Systemsid:1201IP systems use a digital signal over Cat5 cable where the signal is broadcasted back through the network and then into a Network Video Recorder NVR. IP systems are able to utilize Megapixel Resolution which offers a clearer picture than Analog systems. IP Security Cameras are substantially more expensive than analog and require at least some knowledge of IP Networks to properly install and maintain. Video quality is usually better than that of analog cameras, but it depends on the Megapixel rating of the cameras in question.