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Digoo DG-HOSA 433MHz Wireless GSM+WIFI Smart Home Security Alarm Systems Kits

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Digoo DG-HOSA 433MHz Wireless GSM+WIFI Smart Home Security Alarm Systems Kits
DIGOO DG-HOSA Security Alarm Systems -, Model Digoo DG-HOSA, Digoo DG-ROSA 433MHz Wireless DIY Standalone Alarm Siren, Model Digoo DG-ROSA, Digoo DG-HOSA Smart 433MHz Wireless Smoke Detector Fire Alarm Sensor.