The Ebyte E840-TTL(EC05-DNE) is a compact 25x25mm 4G LTE Cat 1 cellular module operating over a wide DC 4.5-18V range, featuring a 2.0mm TTL serial pin interface that enables dual-link MQTT data transparent transmission and direct cloud platform integration across the Asia-Pacific region, Australia, and New Zealand.
| Parameter Type | Technical Specifications |
|---|---|
| Product Model | E840-TTL(EC05-DNE) |
| Cellular Technology | 4G LTE Cat 1 |
| Working Voltage | DC 4.5 to 18V |
| Data Interface | TTL Level (2.0mm pin header) |
| Product Size | 25 x 25 mm |
| Product Weight | 4.1 to 4.5 g |
| Network Features | Supports 2 Socket links, Two-way transparent transmission |
| IoT Protocols | MQTT protocol |
| Cloud Access Platforms | Alibaba Cloud, OneNet, Baidu Cloud, Huawei Cloud |
| Target Target Regions | Asia-Pacific, Australia, New Zealand, etc. |
| Parameter name | Parameter value | Description |
| Characteristic parameters | Support frequency band | LTE-FDD: B1/B3/B5/B7/B8/B20/B28 |
| Network protocol characteristics | Support TCP/UDP/MQTT/HTTP/DNS protocols | |
| RF interface | Generation 1 IPEX interface | |
| Hardware features | Data interface | 3.3V TTL level |
| baud rate | 1200-230400, default 115200bps | |
| data bits | 8 | |
| Stop bit | 1 (default), 2 | |
| Check Digit | None (default), Odd, Even | |
| Operating Voltage | VCC1: DC 4.5~18V | |
| VCC2: 3.3~4.3V | ||
| Note: VCC1 cannot be powered at the same time as VCC2, it is recommended to use the VCC1 pin | ||
| Working current | Peak-VCC1 pin: 2000mA@5V/1000mA@12V | |
| Peak-VCC2 pin: 2500mA@3.3V/2300mA@4.2V | ||
| Standby-VCC1 pin: 50mA@5V/30mA@12V | ||
| Standby-VCC2 pin 80mA@3.3V/60mA@4.2V | ||
| Operating temperature | -40~+85℃ | |
| Dimensions | 25×25mm | |
| product weight | 4.3±0.2g | |
| indicator light | PWR (blue) | Lights up when power is on |
| DATA (green) | Off: The module is powered on and searching for SIM cards; | |
| Flashing: The module detects the correct SIM card and is attaching to the network; | ||
| Steady on: The module is successfully attached to the network; | ||
| DATA (green) | Flashing: When the serial port is sending/receiving data | |
| LINK (orange) | Steady on: The module is successfully connected to the server; | |
| Off: The module failed to connect to the server successfully; |
Practical Application Scenarios
1. Smart Grid and Industrial Remote Telemetry
In distribution automation and power grid monitoring systems, data integrity and wide voltage adaptability are critical. The E840-TTL(EC05-DNE) module handles an expansive input voltage from DC 4.5 to 18V, allowing engineers to connect it directly to standard industrial power rails. By leveraging 4G Cat 1 cellular networks, it establishes low-latency, bidirectional transparent transmission between on-site serial microcontrollers and central SCADA systems, delivering reliable telemetry across remote grid substations.
2. Automated Smart Vending and Commercial IoT Terminals
Commercial self-service equipment requires high-speed transaction reporting and reliable multi-cloud integration. The ultra-small 25x25mm form factor of this module allows layout-constrained motherboard designs to save vital PCB space. Using its native MQTT protocol stack, the module directly uploads point-of-sale data and inventory metrics to mainstream clouds such as Alibaba Cloud or Huawei Cloud, establishing a persistent dual-link architecture to maximize cloud server connection uptime.
3. Distributed Environmental and Water Management Monitoring
For regional environmental monitoring across the Asia-Pacific region, Australia, and New Zealand, sensor stations must continuously stream data over cellular carrier lines. Field developers interface their microcontrollers with the module via the standard 2.0mm TTL level pin headers for simplified debugging. The system utilizes 4G Cat 1 data pipes to transmit real-time industrial sensor frames directly to remote servers, eliminating complex infrastructure setups with its simple serial-to-cellular configuration.
FAQ Section
1. What regional cellular operators and networks does the E840-TTL(EC05-DNE) support?
The module is specifically designed and optimized for deployment within the Asia-Pacific region, Australia, and New Zealand. It utilizes 4G LTE Cat 1 technology, allowing field devices to communicate natively over regional carrier LTE infrastructures with optimized data throughput and significantly lower network latency compared to legacy cellular generations.
2. Can this 4G Cat 1 module connect to multiple network servers concurrently?
Yes, the module features advanced dual-link network capabilities, allowing it to establish and manage 2 independent socket links simultaneously. This allows embedded systems engineers to send primary telemetry data to a central management server while concurrently executing background processes like diagnostics or backup log collection over a secondary link via the MQTT protocol.
3. How does the hardware interface and wide voltage range benefit embedded engineers?
The module offers a wide working voltage range from DC 4.5 to 18V, protecting the system against common industrial voltage fluctuations and simplifying the hardware power circuit design. Additionally, it features a 2.0mm pin header with a TTL level serial data interface, enabling engineers to perform rapid hardware debugging and streamline the overall physical integration into existing IoT control boards.