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HDD bad track mapping to enhance HDD life span
duress alarm
Mifare cards (IC card)
Dynamic ARP source detection
DAHUA ARD2231-W2(868) Wireless Dual-Tech Detector Buy DH ARD323-W2(868S) HDD bad track mapping toARD2231 W2(868) > Pet immunity function. > Auto temperature compensation. > 3 level sensitivity adjustment. > Displays the temperature of the surrounding environment and supports the overheating alarm. > Frequency hopping and two way communication technology ensure that communication is stable. > Supports cloud update and automatically restores when cloud update fails. > PIR and microwave motion detection. > Supports jamming detection and
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