Dahua ART-ARC3800H-03-FW2(868) Wireless Alarm Kit Write speed_8;800 MB/s The Yealink WH66 is the

The Yealink WH66 is the Industry-leading DECT wireless headset

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Dahua ART-ARC3800H-03-FW2(868) Wireless Alarm Kit Write speed_8;800 MB/s The Yealink WH66 is theDahua ART ARC3800H 03 FW2(868) Wireless Alarm Kit Features: Supports connecting up to 8 IPCs in the same LAN Supports in hub pre recording, so the camera doesnt need a SD card Supports two way voice intercom with intercom siren Supports accessing Internet via Ethernet, Wi Fi, and 4G Supports voice call alarm and SMS alarm Supports connecting up to 150 wireless peripherals, including up to 4 sirens, up to 4 repeaters, up to 8 keypads, up to 8 2. 4G PIR