Sistemi di sicurezza domestica wireless GSM & WIFI schermo LCD 2,4 pollici 100 sensori 120 dB
⚫️ 【Dual-Mode Connectivity: WIFI + GSM Backup】Uninterrupted Alerts Stay connected even without WiFi—the alarm system automatically switches to GSM (4G/3G/2G) to send SMS/call alerts to your phone when WiFi is down.