Ajax Wireless Security StarterKit, White, (Control Hub, Motion Detector, Opening Detector, Key fob)// https://ajax.systems/products/starterkit/Complete set: Intelligent control panel; Wireless motion detector; Wireless opening detector; Wireless key fobMaximum number of connected devices: 100Maximum number of users: 50Mobile Apps: iOS 13.0 and later; Android 5.0 and laterAlarm signal delivery time: 0.15 sCommunication channels: Ethernet, GSM (850/900/1800/1900 MHz)SIM card support: Micro SIM 2GVideo surveillance: Up to 10 cameras or DVRs