4G 3G GSM Alarm Security System Alert Module 8‑Channel Input Low Consumption for Home Warehouse SecurityEU Frequency

Feature: 1. DC 5V‑15V power input, 8 channels of alarm detection, each channel of alarm message users can set different content by themselves. You can choose the input port to be NC or NO to alarm. Built‑in 4G module, can work anywhere in the world through 4G, 3G and GSM Net. 2. You can set up to 6 groups of called numbers. When the alarm input has a trigger signal, an alarm message will be sent to the alarm number, or you can call the alarm directly. 3. Easy to use, we have customized APPs, APPs that support for iOS Android systems, and can be set up by simply sending text messages through the app. 4. The low‑power sleep mode design can detect the battery voltage in real time and make a low battery voltage alarm, which is suitable for batt