Check the listing for details. Quorum Security Systems Elert System Portable Alarm. Color: Black, Condition: Open box. Listed at 28.00 USD. This Quorum Security Systems Elert System Portable Alarm is a must-have for anyone who wants to keep their home or office safe and secure. With its powerful and reliable security features, this alarm will give you peace of mind knowing that your property is protected. The alarm is easy to install and use, and its portable design means you can take it with you wherever you go. The alarm is made by Quorum, a trusted brand in the home security industry. It comes in a sleek black color that will blend in seamlessly with your decor. The alarm is classified as "Open box," meaning that it has been opened but has not been used. This Quorum Security Systems Elert System Portable Alarm is perfect for anyone who wants a reliable and easy-to-use security system without having to worry about the condition of the item.