GL09 4G Version 8 Channel GSM Alarm Security System Module, GL09 4G - GL09 4G

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1. Multi-band support: DC 5V-16V power input, 8 alarm detection channels, users can set different content for each alarm information channel. You can choose the alarm input port as NC or NO. 2. The built-in 4G module can work anywhere in the world through 4G, 3G and GSM networks.3. Easy to operate and use: We have customized an app that supports iOS/Android systems, and you can...