Choosing between raw Bluetooth System-on-Chips (SoCs), pre-certified hardware-only SoC modules (e.g., Ebyte E73-2G4M08S1C), and AT-command serial transparent modules (e.g., Ebyte E104-BT5032A) determines product time-to-market, RF compliance cost, and power budget. Raw Bluetooth chips require custom impedance matching networks, external 32.768kHz/32MHz crystals, and regional RF regulatory certification (FCC, CE, KC). In contrast, integrated Bluetooth modules bundle RF front-ends, antenna structures (PCB onboard or IPEX connectors), and power management ICs (PMUs) into a shielded footprint. Choosing the right architecture depends on whether the system requires secondary SoC programming (via ARM Cortex-M4F cores), ultra-low sleep current (under 2uA), or transparent UART plug-and-play transmission for industrial equipment.
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Top 10 Modem & DTU Devices
Ebyte's top-selling wireless modems and DTU (Data Transmission Units) are purpose-built for industrial IoT, SCADA systems, and long-range machine-to-machine (M2M) communication. Trusted by system integrators and engineers across 100+ countries, these devices deliver reliable RS232/RS485/Ethernet connectivity over LoRa, 4G LTE, and GFSK radio links.
Key Features
- Long Range: LoRa DTUs with up to 10km communication range at 30dBm
- Protocol Support: Modbus RTU, Modbus TCP, transparent transmission, and custom AT commands
- Interfaces: RS232, RS485, RJ45 Ethernet, USB — covering all industrial wiring standards
- Wide Power Input: DC 8~28V for direct integration into industrial panels
- Certifications: CE, FCC, RoHS — compliant for global deployment
- Rugged Design: DIN-rail mounting, wide temperature range, ESD and surge protection
Common Applications
- Remote meter reading and utility monitoring (water, gas, electricity)
- SCADA and PLC wireless data acquisition
- Environmental and weather station telemetry
- Smart agriculture and irrigation control
- Oil & gas pipeline monitoring
- Industrial automation and factory IoT
Ebyte E840-DTU(EC05-485)E-V2Iot 4g CAT1 Lte Router Modem Rs485 Gateway Wireless Module Transparent transmission 4g CAT1 Dtu
$14.56 – $16.26The Ebyte E840-DTU(EC05-485)E is an industrial LTE Cat-1 4G RS485 modem for Asia-Pacific, supporting TCP/UDP/MQTT/HTTP protocols, 8V-28V DC power, DIN-rail mounting, and bidirectional serial data transparent transmission. Parameter / Model...
EBYTE ME31-XDXX0800-485 8-Way PT100 RTD Temperature Acquisition Module RS485 High Precision Module Support Modbus DC 8~28V
$24.99The Ebyte ME31-XDXX0800-485 is a PT100 thermal resistor temperature acquisition module with 8-channel PT100 temperature acquisition function, supports RS485 communication interface, supports Modbus RTU standard protocol for acquisition, and can...
Ebyte NA111-E ModBus Gateway TCP/IP to RTU RS485 to Ethernet RJ45 Transparent Transmission POE Powered Serial Port Server
$11.79The Ebyte NA111-E is a high-performance industrial serial port server that enables bidirectional data conversion between RS485 and Ethernet. It functions as a ModBus TCP to RTU/ASCII gateway and supports MQTT...
Ebyte MA01-AACX2220 RS485 2DI+2AI+2DO ModBus RTU I/O Network Modules with Serial Port for PLC/Touch Display 2 Switch Output Watchdog
$10.30The Ebyte MA01-AACX2220 supports the acquisition of 2-channel sensor switch input (DI) and 2-channelsensor analog input (AI) which are converted to serial port (RS485) and data is transmitted to configuration...
EBYTE E610-DTU(433C20) Wireless Digital Radio RS232/RS485 433MHz High-Speed Continuous Transmission 100mW RSSI Low Latency
$26.77The Ebyte E610-DTU (433C20) is a data transmission station of the continuous transmission type 433M wireless data transmission module, with built-in high-performance single-chip microcomputer and wireless transceiver chip. Work in...
Ebyte EWD95M-433GF20(485) Air Wake-up 20dBm 3.5km RS485/RS232 Interface 433MHz GFSK Modulation Digital Radio Micro DIN-rail DTU
EWD95M-433GF20(485) GFSK modulation data transmission radio Micro DIN-rail DTU Multiple transmission methods High cost performance Support intercommunication with E48 module [Interface type]：RS485 [Transmitting power]： 20dBm [Communication distance]：3.5km [Product size]：80*28*27mm [Product weight]：32g±1g...
0.01$ Sample Module
These samples are $0.01, and you can only buy 2 per person. (Limit 2)! Just pay the shipping fee to buy.New product promotion (up to 20% off)
New products of Ebyte: GNSS multi-mode satellite positioning module, E810 series USB to RS485 module, power amplifier PA module.
E810-U16/U17 Series USB to Serial Converter TTL/RS485
$15.61 – $28.66
Ebyte EBT3003 PROFINET Chip Modbus Master/Slave UART 3.9Mbps
$8.57 – $14.48Blog posts
Sub TextDeploying wireless edge nodes via Arduino environments often introduces connectivity instability due to non-blocking network socket misconfigurations, unoptimized AT command parsing, and thermal throttling in high-throughput applications. Integrating industrial-grade WiFi silicon—such as the Espressif ESP32-S3-WROOM-1, Texas Instruments CC3235S, or pre-certified modular hardware like Ebyte's E103-W06 (ESP8266-based) and E101-C3MN4 (ESP32-C3-based)—mitigates hardware-level RF layout degradation. Paired with hardware-optimized libraries (WiFi.h, ESP8266WiFi.h, and WiFiNINA), developers can implement robust TCP/IP sockets, WPA3 enterprise security, and automated reconnect handling to ensure reliable industrial operation across harsh 2.4 GHz and 5 GHz environments.
The Inter-IC Sound (I2S) digital audio interface addresses signal degradation, clock jitter, and electromagnetic interference (EMI) inherent in analog audio transmission by transmitting multi-bit PCM audio data alongside dedicated clock lines over a 3-wire synchronous serial bus. By isolating Bit Clock (BCLK), Word Select (WS/LRCLK), and Serial Data (SD) signals, I2S eliminates time-base errors that cause harmonic distortion in mixed-signal embedded systems. When integrating audio codecs or DSPs with embedded wireless modules like the Ebyte E104-BT5032A (nRF52832), ESP32-S3, or STM32F429 microcontroller families, selecting between standard I2S (MSB-justified/I2S Philips), Left-Justified, Right-Justified, and Time Division Multiplexing (TDM) mode determines channel synchronization, buffer allocation, and master/slave clock tree stability.
Selecting the optimal Bluetooth microcontroller (MCU) or System-on-Chip (SoC) for industrial IoT requires balancing processing architecture (ARM Cortex-M4F/M33), wireless range via output power (+4dBm to +20dBm), power consumption (down to 1.5uA in deep sleep), and peripheral interfaces (UART, SPI, ADC, PWM). For high-density industrial environments, critical factors include physical layer (PHY) capabilities—such as 2Mbps for fast throughput, LE Coded PHY (S=8) for up to 1.5km long-range transmission, and Bluetooth Direction Finding (AoA/AoD)—alongside Flash/RAM capacity for Over-The-Air (OTA) firmware updates. Integrating pre-certified Bluetooth modules with integrated PA/LNA (e.g., Ebyte E73-2G4M20S) simplifies RF impedance matching (50 Ohm) and accelerates FCC/CE compliance.
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