Smart Module

DTG Core iSIM C4 (CAT4)

LTE CAT4 Embedded Core Module with Built-in iSIM

No physical SIM, no SIM-tray BOM — solder it down and it's online. Tailscale mesh VPN and offline onboarding pre-configured: the device joins your tailnet on first power-up, with no per-unit manual setup required. Built on Qualcomm MDM9207 in an XS4G01 LGA package, running Yocto Linux — deployable as a standalone edge gateway.

DTG Core iSIM C4

Highlights

Built-in iSIM

No SIM card, no SIM-tray BOM — direct LGA solder-down. UIM × 2 physical-SIM redundancy also supported.

LTE CAT4

FDD 150 / 50 Mbps, TDD 130 / 30 Mbps. Available in APAC and Japan band variants.

Full Linux edge compute

Yocto Linux 3.18 + Shell + SSH + OTA remote update — run your own application logic on the module itself.

Zero-touch onboarding

Tailscale mesh VPN pre-installed with offline authkey staged: device joins your tailnet on first power-up, no per-unit manual setup. Designed for large-scale deployment.

Rich I/O

UART × 2, SPI, I²C, SDC, USB 2.0 OTG, GPIO × 11, SGMII (Ethernet), UIM × 2.

Industrial-grade

Extended -40°C ~ +85°C operating temperature, 1000 V HBM ESD protection, < 85% R.H. operating humidity.

Standalone deployment

The module itself is a complete edge gateway — no external host needed. Suitable as the sole controller in smart meters, vehicle telematics, vending machines and similar deployments.

Specifications

Processor & Package
SoCQualcomm MDM9207 (ARM Cortex-A7 @ 1.3 GHz)
PackageLGA 216-pin, 32 × 25 × 2.4 mm, 4.5 g
OSYocto Linux 3.18
Memory1 Gb NAND + 1 Gb LPDDR2 (or 2 Gb + 2 Gb)
Network
LTECAT4 (FDD 150 / 50, TDD 130 / 30 Mbps)
3GWCDMA DC-HSPA+ 42 / 5.76 Mbps
SIMBuilt-in iSIM + UIM × 2 physical SIM
Bands (APAC)LTE FDD B1/3/7/8/20/28a, TDD B38/40/41, WCDMA B1/8
Bands (JP)LTE FDD B1/3/7/8/18/19/26/28a, TDD B38/41, WCDMA B1/5/8
GNSSBuilt-in, dedicated antenna port
Interfaces
UART× 2 (4-line × 1 + 2-line × 1 (debug))
SPI / I²CSPI × 1, I²C × 1
GPIO× 11
USB / SDCUSB 2.0 OTG × 1, SDC × 1
SGMII (SOM only)Ethernet × 1
RF / GNSS antennaRF × 2, GNSS × 1
Environment & Power
Power3.3 V ~ 4.2 V (typ. 3.8 V), max 1.5 A
Operating temp-35 ~ +75°C (typ); -40 ~ +85°C (extended)
Storage temp-40 ~ +85°C
Humidity< 85% R.H.
ESD1000 V HBM
CertificationsContact sales

Typical Applications

Smart metering

Electricity, water and gas meters with LTE backhaul.

Vehicle telematics

OBU and fleet management.

Vending machines

Connected vending — no physical SIM required.

Remote industrial control

Industrial equipment remote management; logic runs on the module itself.

Mobile POS

Mobile sales terminals, outdoor event checkout.

How to choose?

DTG Core iSIM C4vs.DTG-720-iSIM →
C4

Core module — for SIs to integrate onto their own PCB. Maximum customization, lowest unit cost.

DTG-720-iSIM

Finished gateway, ready out of the box. Pick this if you don't want to design your own PCB.

DTG Core iSIM C4vs.DTG Core iSIM C1 →
C4

CAT4 + full edge compute + high bandwidth + rich I/O — for multi-interface / Linux applications.

DTG Core iSIM C1

CAT1 bis, lightweight and low cost. Best for pure telemetry (sensors, meters).

Need help integrating the C4 module?

Contact us for the datasheet, sample pricing, carrier-board reference designs, and integration support.

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