The product is a set of 15 RJ31X jacks and 2ft cords designed for alarm systems from brands like Honeywell, DSC, Napco, and ADT. These wired units are intended for indoor use and include only the alarm items without batteries. The connectivity is wired, and the unit type is in feet. The model is specifically RJ31X, and the items included are the alarm components.

They can be used for phone lines too