<h2>Milesight DS3604 4.2-inch IoT E-Ink Display</h2>

<p>The Milesight DS3604 is a compact LoRaWAN IoT E-Ink display designed for flexible digital signage and information presentation in workplaces, retail environments, warehouses, logistics operations and other connected spaces. Its 4.2-inch black, white and red E-Ink screen can display custom text, images and QR codes, while LoRaWAN connectivity, NFC configuration and replaceable batteries provide a practical alternative to frequently replaced paper signage.</p>

<h3>Key Features</h3>

<ul>
<li>
<strong>4.2-inch three-colour E-Ink display:</strong> Presents information using black, white and red with a 400 × 300 resolution and wide 180° viewing angle.</li>
<li>
<strong>Customisable content:</strong> Supports text, images and QR codes with configurable templates for applications such as workplace signage, reservations, retail and logistics.</li>
<li>
<strong>LoRaWAN connectivity:</strong> Compatible with standard LoRaWAN gateways and network servers for wireless content updates and connected deployments.</li>
<li>
<strong>Up to 150 display languages:</strong> Supports a broad selection of character sets and languages for multinational and multilingual environments.</li>
<li>
<strong>Multi-year battery operation:</strong> Three replaceable CR2450 lithium batteries provide around five years of battery life under Milesight's specified Class A usage conditions.</li>
<li>
<strong>NFC configuration:</strong> Allows convenient local device configuration using Milesight ToolBox on a compatible NFC-enabled device.</li>
<li>
<strong>Bulk remote management:</strong> Multicast functionality supports remote configuration of multiple devices for larger deployments.</li>
</ul>

<h3>Flexible E-Ink Digital Signage</h3>

<p>The DS3604 uses reflective E-Ink technology to provide a paper-like display without continuous power consumption while an image remains unchanged. Its 4.2-inch panel supports black, white and red content at 400 × 300 resolution, making it suitable for displaying room information, workplace reservations, labels, notices, QR codes and other frequently updated information.</p>

<h3>Custom Templates and Multilingual Content</h3>

<p>Content can be customised using text, images and QR codes, allowing the display to adapt to different business requirements. Milesight provides factory-preconfigured templates for applications such as hot-desk reservations and workplace signage, while custom templates and integration interfaces provide additional flexibility. The DS3604 supports displaying up to 150 languages, subject to the supported character set.</p>

<h3>LoRaWAN Remote Management</h3>

<p>LoRaWAN connectivity allows displayed content and device configuration to be updated remotely through compatible gateways and network infrastructure. Multicast functionality supports bulk remote configuration, making the DS3604 practical for deployments involving multiple displays. Milesight specifies LoRaWAN transmission distances of up to 2 km in urban environments and 15 km in rural environments, although actual range depends on installation and network conditions.</p>

<h3>Low-Power Battery Operation</h3>

<p>The E-Ink panel retains its displayed image without consuming battery power while left idle. Three replaceable 590 mAh CR2450 lithium batteries provide around five years of operation in Class A mode with one screen refresh per day, based on Milesight laboratory conditions. Battery life varies according to operating mode, refresh frequency, temperature and deployment conditions.</p>

<h3>Technical Specifications</h3>

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<th width="38%"><font color="#ffffff" data-darkreader-inline-color="" style="--darkreader-inline-color: var(--darkreader-text-ffffff, #e8e6e3);">Specification</font></th>
<th><font color="#ffffff" data-darkreader-inline-color="" style="--darkreader-inline-color: var(--darkreader-text-ffffff, #e8e6e3);">Details</font></th>
</tr>
<tr bgcolor="#f2f2f2" data-darkreader-inline-bgcolor="" style="--darkreader-inline-bgcolor: var(--darkreader-background-f2f2f2, #1f2223);">
<td>Brand</td>
<td>Milesight</td>
</tr>
<tr>
<td>Model</td>
<td>DS3604</td>
</tr>
<tr bgcolor="#f2f2f2" data-darkreader-inline-bgcolor="" style="--darkreader-inline-bgcolor: var(--darkreader-background-f2f2f2, #1f2223);">
<td>Manufacturer Part Number</td>
<td>DS3604</td>
</tr>
<tr>
<td>Product Type</td>
<td>LoRaWAN IoT E-Ink Display</td>
</tr>
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<td>Display Type</td>
<td>Reflective E-Ink / electrophoretic display</td>
</tr>
<tr>
<td>Screen Size</td>
<td>4.2 inch</td>
</tr>
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<td>Display Colours</td>
<td>Black, white and red</td>
</tr>
<tr>
<td>Resolution</td>
<td>400 × 300 pixels</td>
</tr>
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<td>Pixel Density</td>
<td>119 DPI</td>
</tr>
<tr>
<td>Viewing Angle</td>
<td>180°</td>
</tr>
<tr bgcolor="#f2f2f2" data-darkreader-inline-bgcolor="" style="--darkreader-inline-bgcolor: var(--darkreader-background-f2f2f2, #1f2223);">
<td>Refresh Rate</td>
<td>16 seconds at 10°C to 40°C</td>
</tr>
<tr>
<td>Supported Content</td>
<td>Text, images and QR codes</td>
</tr>
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<td>Display Character Support</td>
<td>Latin, English, Cyrillic, Greek, Chinese, Japanese and Hangul character sets</td>
</tr>
<tr>
<td>Display Languages</td>
<td>Up to 150 languages, subject to supported character sets</td>
</tr>
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<td>Wireless Technology</td>
<td>LoRaWAN</td>
</tr>
<tr>
<td>Antenna</td>
<td>Internal</td>
</tr>
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<td>LoRaWAN Frequency Bands</td>
<td>CN470, IN865, EU868, RU864, US915, AU915, KR920 and AS923-1/2/3/4</td>
</tr>
<tr>
<td>LoRaWAN Activation</td>
<td>OTAA / ABP</td>
</tr>
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<td>LoRaWAN Device Class</td>
<td>Class A / Class B; default OTAA Class B</td>
</tr>
<tr>
<td>Transmit Power</td>
<td>16 dBm at 868 MHz; 22 dBm at 915 MHz; 19 dBm at 470 MHz</td>
</tr>
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<td>Sensitivity</td>
<td>-137 dBm</td>
</tr>
<tr>
<td>Specified LoRaWAN Range</td>
<td>Up to 2 km in urban areas / 15 km in rural areas, subject to deployment conditions</td>
</tr>
<tr bgcolor="#f2f2f2" data-darkreader-inline-bgcolor="" style="--darkreader-inline-bgcolor: var(--darkreader-background-f2f2f2, #1f2223);">
<td>Configuration</td>
<td>NFC via mobile app or LoRaWAN downlink</td>
</tr>
<tr>
<td>Bulk Configuration</td>
<td>Multicast supported</td>
</tr>
<tr bgcolor="#f2f2f2" data-darkreader-inline-bgcolor="" style="--darkreader-inline-bgcolor: var(--darkreader-background-f2f2f2, #1f2223);">
<td>API Support</td>
<td>Yes</td>
</tr>
<tr>
<td>Buttons</td>
<td>1 × internal reset button, 1 × screen button</td>
</tr>
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<td>Buzzer</td>
<td>1 × buzzer</td>
</tr>
<tr>
<td>Power Supply</td>
<td>3 × 590 mAh CR2450 lithium batteries</td>
</tr>
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<td>Battery Type</td>
<td>Replaceable</td>
</tr>
<tr>
<td>Battery Life – Class A</td>
<td>Around 5 years with 1 screen refresh per day</td>
</tr>
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<td>Battery Life – Class B</td>
<td>Around 1.2 years with 12 screen refreshes per day</td>
</tr>
<tr>
<td>Operating Temperature</td>
<td>0°C to 40°C</td>
</tr>
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<td>Operating Humidity</td>
<td>0% to 95% RH, non-condensing, below 25°C</td>
</tr>
<tr>
<td>Ingress Protection</td>
<td>IP30</td>
</tr>
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<td>Material</td>
<td>ABS + PC</td>
</tr>
<tr>
<td>Colour</td>
<td>White</td>
</tr>
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<td>Installation</td>
<td>Wall mounting using 3M tape or wall screws</td>
</tr>
<tr>
<td>Dimensions</td>
<td>99 × 87 × 10.5 mm</td>
</tr>
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<td>Weight</td>
<td>95.2 g including batteries</td>
</tr>
<tr>
<td>Regulatory Approvals</td>
<td>CE, FCC</td>
</tr>
<tr bgcolor="#f2f2f2" data-darkreader-inline-bgcolor="" style="--darkreader-inline-bgcolor: var(--darkreader-background-f2f2f2, #1f2223);">
<td>Environmental Compliance</td>
<td>RoHS</td>
</tr>
</tbody>
</table>

<ul>
<li>1 × Milesight DS3604 IoT E-Ink Display</li>
<li>1 × 3M double-sided tape</li>
<li>1 × warranty card</li>
<li>1 × quick guide</li>
</ul>

<p>Replace frequently updated paper signs with a compact LoRaWAN E-Ink display designed for low-power, remotely managed business information, and add the Milesight DS3604 to your cart today.</p>

Milesight DS3604 4.2-inch IoT E-Ink Display

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