{"id":85550,"date":"2026-04-10T08:52:18","date_gmt":"2026-04-10T08:52:18","guid":{"rendered":"https:\/\/www.capestone.com\/?post_type=product&#038;p=85550"},"modified":"2026-04-17T10:01:55","modified_gmt":"2026-04-17T10:01:55","slug":"teltonika-calyx-ebd021-4g-embedded-cellular-raspberry-pi-hat","status":"publish","type":"product","link":"https:\/\/capestone.teamcreative.cloud\/en\/product\/teltonika-calyx-ebd021-4g-embedded-cellular-raspberry-pi-hat\/","title":{"rendered":"Teltonika CALYX EBD021 4G Embedded Cellular Raspberry Pi HAT+"},"content":{"rendered":"<h2>Teltonika CALYX EBD021 4G &#8211; Embedded Cellular Raspberry Pi HAT+ with 4G Cat 4, GPIO modem control and PCM audio<\/h2>\n<p>The Teltonika CALYX EBD021 4G is an Embedded Cellular Raspberry Pi HAT+ designed to add mobile Internet access to embedded systems based on Raspberry Pi 4 or 5. This 4G variant mounts directly on top of the SBC, saving space and providing neat integration within compact embedded designs. Supporting 4G Cat 4, GPIO modem control and PCM enhanced audio, the module is aimed at integrators and developers looking to add mobile connectivity where Wi-Fi or Ethernet are not available or reliable. With its 40-pin GPIO header, USB Type-C power supply, Nano-SIM support and mobile antenna connectors, the CALYX EBD021 represents a compact and feature-rich cellular extension for embedded applications.<\/p>\n<h3>4G Raspberry Pi HAT+ application and positioning for embedded systems and industrial integration<\/h3>\n<p>The CALYX EBD021 is positioned as a cellular expansion module for Raspberry Pi 4 and 5 in environments where fixed or wireless networks are unavailable or insufficiently reliable. Within the datasheet, the platform is linked to sectors such as industrial &amp; automation, energy &amp; utilities, smart city, enterprise and retail. By mounting directly to the SBC and combining mobile data, GPIO modem control and PCM audio, this model fits embedded designs where compact integration and mobile accessibility are key. This makes the product suitable for developers and system integrators looking to extend an embedded Raspberry Pi solution with 4G connectivity.<\/p>\n<h3>Why Teltonika CALYX EBD021 4G?<\/h3>\n<ul>\n<li>4G LTE Cat 4 supports mobile data rates of up to 75 Mbps downlink and 50 Mbps uplink for embedded mobile connectivity.<\/li>\n<li>Direct mounting on Raspberry Pi 4\/5 supports space-saving and neat integration within compact embedded systems.<\/li>\n<li>GPIO modem control supports wake, reset and modem management via the Pi pins within embedded design environments.<\/li>\n<li>PCM enhanced audio supports clean audio transmission with low latency within audio-related applications.<\/li>\n<li>40-pin GPIO header, USB Type-C power supply and Nano-SIM support flexible integration into Raspberry Pi-based hardware architectures.<\/li>\n<li>Operating temperature of -40 \u00b0C to 75 \u00b0C supports deployment in industrial and demanding environments.<\/li>\n<\/ul>\n<h3>Applications<\/h3>\n<ul>\n<li>Industrial &amp; automation<\/li>\n<li>Energy &amp; utilities<\/li>\n<li>Smart city<\/li>\n<li>Enterprise<\/li>\n<li>Retail<\/li>\n<li>Embedded Raspberry Pi 4\/5 systems<\/li>\n<li>Mobile connectivity for systems where Wi-Fi or Ethernet are not available or reliable<\/li>\n<li>Embedded designs for integrators and developers<\/li>\n<\/ul>\n<h3>Key features<\/h3>\n<ul>\n<li>Embedded Cellular Raspberry Pi HAT+<\/li>\n<li>Suitable for Raspberry Pi 4 and Raspberry Pi 5<\/li>\n<li>4G Cat 4 mobile connectivity<\/li>\n<li>Direct mounting on the SBC<\/li>\n<li>GPIO modem control<\/li>\n<li>PCM enhanced audio<\/li>\n<li>1 x SIM slot (Nano SIM &#8211; 4FF), push-pull<\/li>\n<li>USB 2.0 &amp; USB Type-C receptacle<\/li>\n<li>2 x SMA for Mobile<\/li>\n<li>40-pin GPIO header<\/li>\n<li>Operating temperature -40 \u00b0C to 75 \u00b0C<\/li>\n<li>With included mounting kit<\/li>\n<\/ul>\n<h3>Embedded 4G HAT+ technology and integration points<\/h3>\n<p>Designed as a direct cellular extension for Raspberry Pi 4 and 5, the CALYX EBD021 mounts directly to the SBC via the 40-pin GPIO header. The module combines 4G connectivity with GPIO modem control, allowing functions such as modem wakeup, reset and on\/off to be controlled via Pi pins. In addition, the platform supports PCM audio and USB 2.0, making the module suitable for embedded designs where compact integration, mobile data and complementary control signals must converge within a single HAT+ solution. Because of this structure, the CALYX EBD021 aligns with system integration projects where space savings and mobile expansion play an important role.<\/p>\n<h3>Connectivity specifications<\/h3>\n<p><strong>Mobile<\/strong><\/p>\n<ul>\n<li>4G LTE-FDD (Cat 4) &#8211; 75Mbps DL, 50Mbps UL<\/li>\n<li>LTE-TDD (Cat 4) &#8211; 65Mbps DL, 35Mbps UL<\/li>\n<li>DC-HSPA+ &#8211; 42Mbps DL, 5.76Mbps UL<\/li>\n<li>3G &#8211; 384 kbps DL, 384 kbps UL<\/li>\n<li>2G EDGE &#8211; 236.8 kbps DL, 236.8 kbps UL<\/li>\n<li>2G GPRS &#8211; 85.6 kbps DL, 85.6 kbps UL<\/li>\n<li>3GPP Release 9<\/li>\n<\/ul>\n<p><strong>SIM<\/strong><\/p>\n<ul>\n<li>1 x SIM slot (Nano SIM &#8211; 4FF), push-pull<\/li>\n<\/ul>\n<p><strong>USB<\/strong><\/p>\n<ul>\n<li>USB 2.0<\/li>\n<li>USB Type-C receptacle<\/li>\n<\/ul>\n<p><strong>Antennas<\/strong><\/p>\n<ul>\n<li>2 x SMA for Mobile<\/li>\n<\/ul>\n<h3>Technical specifications<\/h3>\n<p><strong>GPIO and control<\/strong><\/p>\n<ul>\n<li>PWR_KEY &#8211; modem turn on\/off<\/li>\n<li>Modem wakeup<\/li>\n<li>Modem reset<\/li>\n<li>Digital Input, 0 &#8211; 3.3 V logic level<\/li>\n<li>PCM Digital Interface, 0 &#8211; 3.3 V logic level<\/li>\n<\/ul>\n<p><strong>Nutrition<\/strong><\/p>\n<ul>\n<li>USB type C &#8211; 5 VDC<\/li>\n<li>40-pin GPIO header &#8211; 5 VDC and 3.3 VDC<\/li>\n<\/ul>\n<p><strong>Physical interfaces<\/strong><\/p>\n<ul>\n<li>1 x Power, NET IND, NET STAT<\/li>\n<li>On a 40-pin header\/USB power<\/li>\n<li>USB Type-C receptacle<\/li>\n<li>1 x SIM slot (Nano SIM &#8211; 4FF), push-pull<\/li>\n<li>2 x SMA for Mobile<\/li>\n<\/ul>\n<p><strong>Dimensions and weight<\/strong><\/p>\n<ul>\n<li>56 x 23.11 x 95.48 mm<\/li>\n<li>57 g<\/li>\n<\/ul>\n<p><strong>Montage<\/strong><\/p>\n<ul>\n<li>With included mounting kit<\/li>\n<li>Environmental specifications<\/li>\n<li>Operating temperature -40 \u00b0C to 75 \u00b0C<\/li>\n<\/ul>\n<h3>Environment and hardware<\/h3>\n<p><strong>Dimensions<\/strong><\/p>\n<ul>\n<li>56 x 23.11 x 95.48 mm<\/li>\n<\/ul>\n<p><strong>Weight<\/strong><\/p>\n<ul>\n<li>57 g<\/li>\n<\/ul>\n<p><strong>Montage<\/strong><\/p>\n<ul>\n<li>With included mounting kit<\/li>\n<\/ul>\n<p><strong>Temperature range<\/strong><\/p>\n<ul>\n<li>-40 \u00b0C to 75 \u00b0C<\/li>\n<\/ul>\n<h3>Certifications<\/h3>\n<p>CE, UKCA, EAC, UCRF, RCM, CB, WEEE<\/p>\n<h3>In the box<\/h3>\n<ul>\n<li>CALYX<\/li>\n<li>Quick Start Guide<\/li>\n<li>PCB connector<\/li>\n<li>USB Type-C to USB Type-A cable<\/li>\n<li>Fasteners kit<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Downloads<\/h3>\n<p><a href=\"https:\/\/www.capestone.com\/media\/2026\/04\/Calyx_Datasheet_v101.pdf\">Datasheet<\/a><\/p>\n<p><a href=\"https:\/\/www.capestone.com\/media\/2026\/04\/Calyx_Flyer_2025_v11.pdf\">Flyer<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Teltonika CALYX EBD021 4G is a compact Embedded Cellular Raspberry Pi HAT+ for developers and system integrators looking to add reliable 4G connectivity to Raspberry Pi 4 and 5. This 4G expansion module mounts directly to the SBC and combines mobile data, GPIO modem control and PCM audio in one space-saving solution. With 4G Cat 4, Nano-SIM, USB Type-C and an industrial temperature range, the CALYX EBD021 is suitable for embedded applications in industrial automation, smart city, energy, enterprise and retail. A strong choice for projects where Wi-Fi or Ethernet are not available or reliable.<\/p>\n","protected":false},"featured_media":85526,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[587,588,591,3105],"product_tag":[],"class_list":{"0":"post-85550","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-4g-5g-routers","7":"product_cat-4g-5g-routers-for-industry","8":"product_cat-4g-5g-routers-for-m2m-iot","9":"product_cat-other-routers","11":"first","12":"instock","13":"taxable","14":"shipping-taxable","15":"purchasable","16":"product-type-composite"},"composite_virtual":false,"composite_layout":"single","composite_add_to_cart_form_location":"default","composite_editable_in_cart":false,"composite_sold_individually_context":"product","composite_shop_price_calc":"min_max","composite_components":[{"id":"1776414256","title":"Teltonika Remote Management 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Embedded Cellular Raspberry Pi HAT+ with 4G Cat 4, GPIO modem control, PCM audio, Nano-SIM and USB Type-C | Compact 4G expansion module for Raspberry Pi 4\/5, embedded systems, IoT, industrial automation and smart city applications |\" \/>\n<meta name=\"robots\" content=\"noindex, nofollow, teamcreative\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Teltonika CALYX EBD021 4G Embedded Cellular Raspberry Pi HAT+\" \/>\n<meta property=\"og:description\" content=\"Teltonika CALYX EBD021 4G | Embedded Cellular Raspberry Pi HAT+ with 4G Cat 4, GPIO modem control, PCM audio, Nano-SIM and USB Type-C | Compact 4G expansion module for Raspberry Pi 4\/5, embedded systems, IoT, industrial automation and smart city applications |\" \/>\n<meta property=\"og:url\" content=\"https:\/\/capestone.teamcreative.cloud\/en\/product\/teltonika-calyx-ebd021-4g-embedded-cellular-raspberry-pi-hat\/\" \/>\n<meta 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