Is it possible to add additional door and window sensors? Thanks, SB
Hello Stuart, Yes you can add up to 99 sensors to the system. Thanks, Jessica Customer Service Manager
Is there a monthly charge to use the app
Hello Bart, No, there is not a monthly charge for the mobile app. Please let us know if you have any other questions! Thank you, Astrid
I have internet but no landline phone. Will this work through my internet connection?
Hello Ruu, Yes, the system will work without a landline connection, but it will not call you through internet connection. Please let us know if you have any other questions! Thank you, Astrid
what kind of batteries to replace in future and how long do the batteries last normally
Hello Larry, The S03 sensors use a 23A style batteries and the motion detectors use AAA batteries. Thanks, Jessica Fortress Security Store
I have the S03 system, can cameras be added to this system?
Hello Steve, The cameras are standalone items and don't actually pair to the main panel. Thanks, Jessica