How to Buy a Security System on eBay

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How to Buy a Security System on eBay

When choosing a security system, it is difficult to place a budget on safety and protection. Before considering a budget, the buyer must first determine the type of system they will need for their home or business. The size of the area needing to be secured determines the number and types of security devices and components. Larger areas have more space to cover and more entry points to monitor. Smaller areas require less security and thus a smaller security system.

By reviewing all of the options and available for security systems, the buyer can choose what options will best meet their needs. When securing a home it is important to consider lifestyle, the level of protection required, and ease of installation. In addition to all of the components, the buyer must factor in costs related to the installation and upkeep of the system, as well as subscription costs for round the clock monitoring by a security response team.

A security system can either be purchased directly from alarm monitoring companies or from electronic retailers that specialise in security system components. A marketplace such as eBay is an online alternative for purchasing security system components.

Security System Components

A security systems consists of various devices and components that work together to offer varying levels levels of protection and surveillance. The more customised the system, the more features its boasts, the more costly the security system will be. A buyer should consider each component in the configuration and as well as consider the size of the area that needs protection before shopping for a security system.


Sensors are attached to doors and windows. Upon installation, the sensors are linked to the control panel. Should the sensor detect a disturbance while the system is armed, the sensors are activated and in turn send a signal through a transmitter to the control panel. The panel sets off the alarm, indicating that either a door has been left ajar, or that someone or something is attempting unauthorised access through a door or window.

Motion Detectors

A motion detector is placed in the home near doorways or other entry points. Motion detectors can be set to trigger an alarm at the panel when motion is detected. Systems installed with security cameras are often linked to motion detectors indoors and outdoors. When motion is detected, a signal is sent to the control panel. The cameras then start to record. Motion detectors are particularly helpful when the occupants are away from home or when sleeping at night. Buyers need to consider any pets before buying a set of motion detectors. If an animal like a pet dog is free to roam the home when a family is away, the dog may trip the motion detector, setting off a false alarm. If motion detection has to be regularly disarmed because of house pets, it will turn out to be money wasted.

Control Panels

A control panel is the mainframe of the security system. Typically a control panel is installed in a wardrobe or other concealed location in the master bedroom. Control panels receive any and all signals sent from the other detection devices throughout the home. These signals trigger alarms and indicate the specific zones in the home where trouble has been detected. Control panels are also directly connected to phone or data lines. If there is a disturbance, the control panel contacts the alarm monitoring company, or emergency services.


The alarms are triggered by the control panels to alert occupants and neighbours that something is wrong. When an alarm is set off due to a disturbance, the monitoring service is also contacted through the control panel. Silent alarms can also be installed and set to contact the homeowner or the monitoring company should a disturbance be detected. The loud alarms and sirens are meant to frighten away intruders.


The keypad is installed in a central location. It allows the occupants of a house to manage the features of the security system. Keypads allow an authorised person to activate the system, controlling each sensor individually, and to speak to the security monitoring company. When activating the alarm, the user can choose specific areas of the home to monitor or to deactivate. For example, if the alarm is set while a family is home, the motion sensors can be disarmed in certain areas like bedrooms and bathrooms where occupants are still moving about. A numeric code is programmed at the time of installation, and this code is entered on the keypad to arm or disarm the alarm system.

Other Optional Components

The following table details other optional components and features that can be added to the alarm system, to extend or enhance the capabilities of the standard security equipment. The choice of optional features should be based on the configuration of the home and security needs of the homeowner and the occupants.

System Option


Audio Discriminators

Sensors that detect the acoustic shock waves of breaking glass


Strobe lights and outdoor sensor lights can be linked to the alarms

Backup System

Twenty-four hour backup system kicks in when electricity is shut off

Remote Control

Can be used to arm or disarm the system without using the keypad

Smoke and Heat Detectors

Can be linked to the alarm system to trigger alarms in the event of a fire


A variety of cameras can be installed to visually monitor the interior and exterior of a home


A wired or wireless network can be setup to monitor the system and cameras


Closed circuit television for viewing security camera feed

Before adding additional components and features, it is important to carefully evaluate the home and the exterior grounds. Some devices may require installation by a professional and a tradesperson like an electrician may have to be consulted. Some optional features and devices may require access to additional electricity outlets, and modification to the roof, walls, windows, and doors. This may increase the amount of time and resources needed to make the system fully operational.

Wired or Wireless Security System?

Security systems are designed to be either hard wired in the home or wireless. The recent advances in wireless systems has resulted in greater signal strength and less interference. Understanding the advantages of each type of system helps in deciding what system is the correct one for a particular home.


A hardwired security system is the traditional form of home security. This configuration is considered more reliable because with wires there is little interference and only marginal signal degradation. This system experiences no interference and most homes are already pre-wired for wired security systems. A pre-wired home makes installation and activation much easier, with fewer steps involved. Wired systems and the accessories that are used with a wired system are less expensive than the wireless versions.


A wireless security system relies on a wi-fi signal for each component to relay signals to the control panel. Most homes can support the installation of a wireless system, since even if the house is not wired for a security system, a wireless system can still operate there. The installation of this type of system is very simple. There are also no exposed wires that can be cut by intruders. Like a wired system, the wireless system can be linked to the monitoring company. In addition, wireless sensors and cameras can all be linked together without running wires or drilling into walls. Relocation of cameras or sensors that are not hardwired can be easily accomplished, without a concern for system connections.

Buying Security Systems on eBay

To find security systems on eBay, you may want to start by conducting a general search from the homepage. You can enter search queries such as ‘security system’ or ‘burglar alarm system’. The site’s local search engine will then generate a results page of listing to peruse. If the listings are too general, you can narrow the search by entering more specific keywords. The search can be be honed by searching for specific components, brand names, features, or type. The more details provided regarding wireless security system with cameras or outdoor wired security system, the more focused the search.

When considering purchasing components for a security system, it is vitally important that you read the item descriptions carefully. Should you have any queries about the components working properly with the wiring installed in the home or with other components that may already be installed you should ask the seller questions about the components they have listed for sale. To contact the seller, simply click on their username. This action will take you to their profile page. Next, click on the contact link, and ask away.


When deciding upon the correct system to provide adequate security for a home or business, it is important for the buyer to properly assess their security needs and the physical space that must be monitored. The first choice will be between wireless or wired systems, and this choice in turn determine the type of components required to make the system fully operational. The size of the space and the desired level of security determines the number and types of components. Consider the number of entry points, whether outdoor security is also a concern, and whether or not cameras should be installed. The installation of some devices may require modification to the home’s roof, walls, and doors and windows.

Because alarm companies are involved in the security monitoring of the home, they also sell the various security system components. Shopping in an online marketplace such as eBay for a security system allows more latitude in terms of variety and prices.

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