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. Be sure to keep weather and location in mind when choosing indoor security systems versus outdoor security systems and ones that can be utilized in both places. From there, determining which security cameras to purchase is made easier with our Security Cameras Buying Guide. All the rage, smart security cameras are very convenient option. All the Right Parts to Cover all Your BasesNow that you’re ready to begin purchasing a system, it’s time to determine the type and number of cameras, sensors, detectors and alarms you’ll need. There are basic alarm systems that include door sensors, window sensors and a keypad to control arming and disarming. For properties that have more square footage and openings to cover, a smart security system with wireless doorbell cameras, spy cameras, motion sensors, and multiple door and window alarms can all be controlled remotely via your smartphone or tablet, allowing you to keep an eye on things from anywhere, especially when you’re not home. To cover all your bases, be sure to look into driveway alarms, voice recorders, water leak detectors and pool door alarms. Whatever type of system you’re looking to utilize to protect your home, The Home Depot has all of the expert knowledge, popular brands and parts you need to keep things safe and secure. Sale 12 Volt 4AH Alarm BatteryRegular Price:$20. 00 Sale$11.