Photo 1 of SanJie Adjustable Volume Door Alarm Sensor for Home Security & Child Safety, 120dB Burglar Alarm with 4 Modes - Wireless Window & Entry Alert for Pool, Office, Shop, Business

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Photo 1 of SanJie Adjustable Volume Door Alarm Sensor for Home Security & Child Safety, 120dB Burglar Alarm with 4 Modes - Wireless Window & Entry Alert for Pool, Office, Shop, BusinessPhoto 2 of SanJie Adjustable Volume Door Alarm Sensor for Home Security & Child Safety, 120dB Burglar Alarm with 4 Modes - Wireless Window & Entry Alert for Pool, Office, Shop, Business