Disadvantages of alarm security systems They require an initial investment, including the cost of the equipment, the installation and the subscription of the security monitoring service. In a wireless alarm system, individual sensors and components communicate with the central control panel using radio waves. Because the system depends on radio frequencies, other devices that use similar frequencies can interrupt communication between components and cause the system to stop operating temporarily. In some cases, frequency interference could also cause a false alarm.
In addition, security company Alarm Grid points out that metal objects placed near sensors or the control panel can cause radio interference, as can electronic devices and even electrical wiring. Because a wireless alarm system integrates radio signals, it can expose you to great risks. You can't call the police through a pre-recorded message, so when you're being attacked and don't have time to call the police yourself, you're hopeless. You may also need to drill holes in the wall and obtain a mounting kit when installing wired security cameras.
Security alarm systems can be expensive. High-quality, state-of-the-art alarm systems are not cheap. They require a substantial initial investment that includes the cost of the equipment, the installation and the subscription of the security monitoring service.