This listing is just the Base Station.  I have seperately listed the other parts since you may or may not want other things.  I can cut shipping costs for multiple orders.  
Base station works fine.  battery backup!  Just Reset and Setup for your home.  
Model SSBS3

It’s also responsible for sending all your alarm signals to our 24/7 alarm monitoring center. Your Base Station will arrive equipped with the same cellular technology that’s in your cellphone. Inside there is a SIM card that gets activated when you subscribe to our alarm monitoring service.

  • Built-in 95 Decibel Siren

  • Voice Prompts guide you through installation.

  • Built-in Cellular and Wi-Fi: No phoneline needed. Twin cellular and Wi-Fi connections run in parallel. So your home is protected even if your home phoneline is cut or Wi-Fi downed.

  • 100 Sensor Capacity: Get all the sensors you need to protect any home, large or small.

  • Backup Battery lasts up to 24 hours during a power outage. Base Station will recharge them once the power is restored to your home.