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1 SIP account, 2 line keys, 3-way conferencing, 3 XML programmable context-sensitive soft keys
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Dual-switched 10/100 mbps ports
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EHS support for Plantronics headsets
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Up to 500 contacts
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Call history up to 200 records
The Grandstream GWN7664ELR is a long-range, outdoor Wi-Fi 6 access point with up to 6 Gbps throughput, 300m coverage, and support for 512 clients—perfect for enterprise-grade wireless networking.
 20 SIP lines, 3-way conference, hotspot
 5″ high-resolution color display
 HD audio on speakerphone and handset
 Up to 60 DSS keys entries available (12 physical)
 Built-in Bluetooth for connecting Bluetooth headset
 Wi-Fi connectivity (via Wi-Fi dongle)
 Video codec H.264 support for receiving video calls
 Stand with 2 adjustable angles of 40 and 50 degrees
 Support EHS headset
 Dual Gigabit ports, integrated PoE
 Compatible with major platforms:3CX, Avaya, Asterisk,
Broadsoft, Metaswitch, Elastix etc.
Grandstream DP725 is a DECT HD handset supporting up to 20 SIP lines, with 400m outdoor range (via DP755), 50-hour talk time, secure DECT encryption, and advanced VoIP features for professional mobility.
Grandstream DP722 DECT Cordless Handset | HD Audio & Multi-Line Support 
High Voltage Wire 
Hikvision DS-PDMC-EG2-WB | Wireless Magnetic Door Sensor for GPRS/3G/4G Alarm system 
