Will not work with an aftermarket security system. Useless product. It's too late to return it, but it doesn't fit the normal cables that come with every security system.
Pros
π€ The microphone comes with a combined power and audio cable, a 1-foot cable with an RCA audio connector and a 2.1mm positive center plug. Catch every sound with an ultra-high gain micro audio system. On-chip integrated preamp, low noise, high gain, and automatic level control