Sistema di allarme caldo (US) 4G/3G/GSM GL09 4G/3G/ GSM 8CH sistema di sicurezza di allarme *
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. The input is a switch signal. Item Type: 4G/3G/GSM Alarm Module.