Simply Safe Home Alarm System,WiFi+GSM/4G Alarm System with Door Sensors & Motion Detectors,Compatible with Smart Life or Tuya Phone App Control NO Monthly Fees,Real-Time Alert

No Monthly Fees or Contracts: This Alarm System requires no charges or subscriptions. Simply insert a SIM card, and you can use all its functions permanently for free.
2.4GHz WiFi + GSM/4G: The Home Security System only supports connection to 2.4GHz WiFi or insertion of a 4G SIM card, enabling APP-based remote control and notification reception. It is compatible with the “Tuya” and “Smart Life” Apps.
Sleek Design & Quick Installation: The Home Alarm System features a keypad design, which significantly reduces overall power consumption and simplifies operation. With a built-in doorbell function in the main unit, it can be installed by one person alone.