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<svg width="1000" height="820" viewBox="0 0 1000 820" xmlns="http://www.w3.org/2000/svg">
<!-- Title -->
<text x="500" y="45" font-family="Arial, sans-serif" font-size="26" font-weight="bold" text-anchor="middle" fill="#333">Wi-Fi HaLow IoT Network</text>
<!-- External Router -->
<rect x="460" y="90" width="80" height="60" rx="8" fill="#333"/>
<text x="500" y="125" font-family="Arial, sans-serif" font-size="14" fill="white" text-anchor="middle">ROUTER</text>
<text x="500" y="70" font-size="12" text-anchor="middle" fill="#666">(Internet Exit Point)</text>
<!-- Ethernet -->
<line x1="500" y1="150" x2="500" y2="190" stroke="#333" stroke-width="4"/>
<text x="520" y="170" font-size="12" fill="#333">Ethernet cable</text>
<!-- Gateways (all identical style now) -->
<!-- Central -->
<g id="central" transform="translate(500,220)">
<circle cx="0" cy="0" r="70" fill="#fff1b8" stroke="#faad14" stroke-width="3"/>
<text x="0" y="0" font-size="15" font-weight="bold" text-anchor="middle">RLFHL</text>
<text x="0" y="20" font-size="13" text-anchor="middle">Gateway</text>
<circle cx="0" cy="0" r="110" fill="none" stroke="#52c41a" stroke-width="2" stroke-dasharray="6,4"/>
<text x="120" y="0" font-size="11" fill="#52c41a">2.4GHz ~100m</text>
<circle cx="0" cy="0" r="340" fill="none" stroke="#faad14" stroke-width="2" stroke-dasharray="6,4"/>
<text x="350" y="0" font-size="11" fill="#faad14">HaLow ~1km</text>
</g>
<!-- Left -->
<g transform="translate(180,380)">
<circle cx="0" cy="0" r="60" fill="#fff1b8" stroke="#faad14" stroke-width="3"/>
<text x="0" y="0" font-size="15" font-weight="bold" text-anchor="middle">RLFHL</text>
<text x="0" y="20" font-size="13" text-anchor="middle">Gateway</text>
<circle cx="0" cy="0" r="100" fill="none" stroke="#52c41a" stroke-width="2" stroke-dasharray="6,4"/>
<circle cx="0" cy="0" r="300" fill="none" stroke="#faad14" stroke-width="2" stroke-dasharray="6,4"/>
</g>
<!-- Right -->
<g transform="translate(820,380)">
<circle cx="0" cy="0" r="60" fill="#fff1b8" stroke="#faad14" stroke-width="3"/>
<text x="0" y="0" font-size="15" font-weight="bold" text-anchor="middle">RLFHL</text>
<text x="0" y="20" font-size="13" text-anchor="middle">Gateway</text>
<circle cx="0" cy="0" r="100" fill="none" stroke="#52c41a" stroke-width="2" stroke-dasharray="6,4"/>
<circle cx="0" cy="0" r="300" fill="none" stroke="#faad14" stroke-width="2" stroke-dasharray="6,4"/>
</g>
<!-- Bottom -->
<g transform="translate(500,620)">
<circle cx="0" cy="0" r="60" fill="#fff1b8" stroke="#faad14" stroke-width="3"/>
<text x="0" y="0" font-size="15" font-weight="bold" text-anchor="middle">RLFHL</text>
<text x="0" y="20" font-size="13" text-anchor="middle">Gateway</text>
<circle cx="0" cy="0" r="100" fill="none" stroke="#52c41a" stroke-width="2" stroke-dasharray="6,4"/>
<circle cx="0" cy="0" r="300" fill="none" stroke="#faad14" stroke-width="2" stroke-dasharray="6,4"/>
</g>
<!-- Long-range HaLow mesh links between gateways -->
<line x1="500" y1="290" x2="180" y2="380" stroke="#faad14" stroke-width="2.5" stroke-dasharray="8,5"/>
<line x1="500" y1="290" x2="820" y2="380" stroke="#faad14" stroke-width="2.5" stroke-dasharray="8,5"/>
<line x1="500" y1="290" x2="500" y2="560" stroke="#faad14" stroke-width="2.5" stroke-dasharray="8,5"/>
<line x1="180" y1="380" x2="500" y2="620" stroke="#faad14" stroke-width="2.5" stroke-dasharray="8,5"/>
<line x1="820" y1="380" x2="500" y2="620" stroke="#faad14" stroke-width="2.5" stroke-dasharray="8,5"/>
<line x1="180" y1="380" x2="820" y2="380" stroke="#faad14" stroke-width="2.5" stroke-dasharray="8,5"/>
<!-- Personal devices (inside 2.4GHz circles) -->
<!-- Central -->
<g transform="translate(380,140)"><rect x="-40" y="-20" width="80" height="40" rx="6" fill="#d9f7be" stroke="#52c41a" stroke-width="2"/><text x="0" y="5" font-size="11" text-anchor="middle">Laptop</text></g>
<g transform="translate(620,140)"><rect x="-30" y="-20" width="60" height="40" rx="6" fill="#d9f7be" stroke="#52c41a" stroke-width="2"/><text x="0" y="5" font-size="11" text-anchor="middle">Phone</text></g>
<!-- Left -->
<g transform="translate(90,340)"><rect x="-35" y="-18" width="70" height="36" rx="6" fill="#d9f7be" stroke="#52c41a" stroke-width="2"/><text x="0" y="5" font-size="10" text-anchor="middle">Phone</text></g>
<g transform="translate(130,300)"><rect x="-40" y="-20" width="80" height="40" rx="6" fill="#d9f7be" stroke="#52c41a" stroke-width="2"/><text x="0" y="5" font-size="10" text-anchor="middle">Laptop</text></g>
<!-- Right -->
<g transform="translate(880,340)"><rect x="-35" y="-18" width="70" height="36" rx="6" fill="#d9f7be" stroke="#52c41a" stroke-width="2"/><text x="0" y="5" font-size="10" text-anchor="middle">Phone</text></g>
<g transform="translate(840,300)"><rect x="-40" y="-20" width="80" height="40" rx="6" fill="#d9f7be" stroke="#52c41a" stroke-width="2"/><text x="0" y="5" font-size="10" text-anchor="middle">Laptop</text></g>
<!-- Bottom -->
<g transform="translate(420,680)"><rect x="-35" y="-18" width="70" height="36" rx="6" fill="#d9f7be" stroke="#52c41a" stroke-width="2"/><text x="0" y="5" font-size="10" text-anchor="middle">Phone</text></g>
<g transform="translate(580,680)"><rect x="-40" y="-20" width="80" height="40" rx="6" fill="#d9f7be" stroke="#52c41a" stroke-width="2"/><text x="0" y="5" font-size="10" text-anchor="middle">Laptop</text></g>
<!-- Sensors / IoT devices -->
<g transform="translate(100,480)"><circle cx="0" cy="0" r="26" fill="#e6fffb" stroke="#13c2c2"/><text x="0" y="8" font-size="20" text-anchor="middle">💡</text></g>
<g transform="translate(140,540)"><circle cx="0" cy="0" r="26" fill="#e6fffb" stroke="#13c2c2"/><text x="0" y="8" font-size="20" text-anchor="middle">🌡️</text></g>
<g transform="translate(220,620)"><circle cx="0" cy="0" r="26" fill="#e6fffb" stroke="#13c2c2"/><text x="0" y="8" font-size="20" text-anchor="middle">🔒</text></g>
<g transform="translate(380,700)"><circle cx="0" cy="0" r="30" fill="#e6fffb" stroke="#13c2c2"/><text x="0" y="10" font-size="22" text-anchor="middle">🖥️</text></g>
<g transform="translate(620,620)"><circle cx="0" cy="0" r="26" fill="#e6fffb" stroke="#13c2c2"/><text x="0" y="8" font-size="18" text-anchor="middle">📷</text></g>
<g transform="translate(880,500)"><circle cx="0" cy="0" r="30" fill="#e6fffb" stroke="#13c2c2"/><text x="0" y="10" font-size="22" text-anchor="middle">📦</text><text x="40" y="5" font-size="11">Scanner</text></g>
<!-- CONNECTION LINES to closest gateway -->
<!-- Central personal devices → central gateway (2.4GHz) -->
<line x1="500" y1="290" x2="380" y2="140" stroke="#52c41a" stroke-width="1.5" stroke-dasharray="4,3"/>
<line x1="500" y1="290" x2="620" y2="140" stroke="#52c41a" stroke-width="1.5" stroke-dasharray="4,3"/>
<!-- Left personal + sensors → left gateway -->
<line x1="180" y1="380" x2="90" y2="340" stroke="#52c41a" stroke-width="1.5" stroke-dasharray="4,3"/> <!-- phone -->
<line x1="180" y1="380" x2="130" y2="300" stroke="#52c41a" stroke-width="1.5" stroke-dasharray="4,3"/> <!-- laptop -->
<line x1="180" y1="380" x2="100" y2="480" stroke="#13c2c2" stroke-width="1.5" stroke-dasharray="3,3"/> <!-- light -->
<line x1="180" y1="380" x2="140" y2="540" stroke="#13c2c2" stroke-width="1.5" stroke-dasharray="3,3"/> <!-- temp -->
<line x1="180" y1="380" x2="220" y2="620" stroke="#13c2c2" stroke-width="1.5" stroke-dasharray="3,3"/> <!-- lock -->
<!-- Right personal + devices → right gateway -->
<line x1="820" y1="380" x2="880" y2="340" stroke="#52c41a" stroke-width="1.5" stroke-dasharray="4,3"/> <!-- phone -->
<line x1="820" y1="380" x2="840" y2="300" stroke="#52c41a" stroke-width="1.5" stroke-dasharray="4,3"/> <!-- laptop -->
<line x1="820" y1="380" x2="620" y2="620" stroke="#13c2c2" stroke-width="1.5" stroke-dasharray="3,3"/> <!-- camera -->
<line x1="820" y1="380" x2="880" y2="500" stroke="#13c2c2" stroke-width="1.5" stroke-dasharray="3,3"/> <!-- scanner -->
<!-- Bottom personal + devices → bottom gateway -->
<line x1="500" y1="620" x2="420" y2="680" stroke="#52c41a" stroke-width="1.5" stroke-dasharray="4,3"/> <!-- phone -->
<line x1="500" y1="620" x2="580" y2="680" stroke="#52c41a" stroke-width="1.5" stroke-dasharray="4,3"/> <!-- laptop -->
<line x1="500" y1="620" x2="380" y2="700" stroke="#13c2c2" stroke-width="1.5" stroke-dasharray="3,3"/> <!-- computer -->
<!-- Descriptive texts (restored) -->
<text x="720" y="180" font-family="Arial, sans-serif" font-size="12" fill="#333">RLFHL Gateway serves as Wi-Fi HaLow IoT Gateway central</text>
<text x="720" y="195" font-family="Arial, sans-serif" font-size="12" fill="#333">controller. It's ideally placed to distribute network signals</text>
<text x="720" y="210" font-family="Arial, sans-serif" font-size="12" fill="#333">effectively to Wi-Fi HaLow devices via star topology. This</text>
<text x="720" y="225" font-family="Arial, sans-serif" font-size="12" fill="#333">setup boosts the network's range and ensures a solid, steady</text>
<text x="720" y="240" font-family="Arial, sans-serif" font-size="12" fill="#333">connection for all connected devices, leading to reliable</text>
<text x="720" y="255" font-family="Arial, sans-serif" font-size="12" fill="#333">wireless communication.</text>
<text x="720" y="320" font-family="Arial, sans-serif" font-size="12" fill="#333">The concept of a Wi-Fi HaLow Mesh network is as follows:</text>
<text x="720" y="335" font-family="Arial, sans-serif" font-size="12" fill="#333">All devices under the same gateway share a single SSID,</text>
<text x="720" y="350" font-family="Arial, sans-serif" font-size="12" fill="#333">forming a Mesh network. This setup enhances coverage and</text>
<text x="720" y="365" font-family="Arial, sans-serif" font-size="12" fill="#333">signal strength, providing stable connectivity, and is</text>
<text x="720" y="380" font-family="Arial, sans-serif" font-size="12" fill="#333">particularly suitable for military applications.</text>
<text x="820" y="500" font-family="Arial, sans-serif" font-size="12" fill="#333" text-anchor="middle">RLFHL Gateway</text>
<text x="820" y="515" font-family="Arial, sans-serif" font-size="12" fill="#333" text-anchor="middle">featuring dual-band capabilities with both 2.4GHz and</text>
<text x="820" y="530" font-family="Arial, sans-serif" font-size="12" fill="#333" text-anchor="middle">Sub-1GHz frequencies, offers a robust wireless connection</text>
<text x="820" y="545" font-family="Arial, sans-serif" font-size="12" fill="#333" text-anchor="middle">up to 2 kilometers from the access point,</text>
<text x="820" y="560" font-family="Arial, sans-serif" font-size="12" fill="#333" text-anchor="middle">ensuring consistent internet access on the go.</text>
<!-- Bottom note -->
<text x="500" y="800" font-family="Arial, sans-serif" font-size="14" text-anchor="middle" fill="#555">Hybrid Mesh + Star Topology • Devices connected to closest gateway via 2.4GHz (local) or HaLow (long-range)</text>
</svg>
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