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VVM701-4G IoT Gateway Board ESP32S3 Quectel EC200U with RS485 RS232 Ethernet Analog Digital IO for Industrial Applications

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Vajravolt AI IoT 4G LTE Industrial Gateway Board VVM701

Product Description

The Vajravolt VVM701 is an industrial AIoT gateway and development board built around the ESP32-S3 and Quectel EC200U-CN 4G LTE Cat 1 module. It combines Wi-Fi, Bluetooth 5, GNSS/GPS, isolated serial interfaces, industrial analog and digital I/O, relay outputs, local storage and expansion support in a single platform for embedded/edge AIoT, industrial automation, data acquisition, logging, control and remote monitoring applications.

Applications

Embedded/Edge AIoT solutions Industrial automation systems Data acquisition and logging Control systems Remote monitoring applications

Product Specifications

ESP32-S3 GPIO Pin MappingAll peripherals not mounted on board. Few pins may be shared among peripherals.
EC200U-CN 4G LTE / GPS Module (Serial Communication)41(Tx) to Rx, 40(Rx) to Tx, 42 to Power Key respectively of 4G Module
SPI Communication for Ethernet/LCD/LoRa11(MOSI), 13(MISO), 12(CLK) - Regular SPI for W5500 Ethernet, 2.4 inch Touchscreen LCD, RFM95W LoRa
SD Card (HSPI Communication)38(MISO), 47(MOSI), 39(CLK), 48(CS) Alternate HSPI
RS485 / RS232 / CAN (Serial Comm.)1(Tx), 2(Rx). Select either RS485 or RS232 or CAN by the Jumper Selector
RTC (DS3231 based – I2C Comm.)4(SCL), 5(SDA)
Data Acquisition (Serial Comm.)TXD0 and RXD0 for communication with Nuvoton MS51FB9AE for 5 Analog Channel, 4 Isolated Digital Channel and 2 Relay Channel
W5500 Ethernet (SPI Comm.)21 for Chip Select, plus regular SPI pins
2.4” TFT Touchscreen LCD (SPI)9(LCD Reset), 10(LCD DC), 14(LCD CS), 8(Touch CS), plus regular SPI pins
LoRa RFM95W (SPI)16(LoRa CS), 17(LoRa RST), plus regular SPI pins
Camera (SCCB Communication)OV2640, OV7670 or similar cameras. 4(SCL/SIOC), 5(SDA/SIOD), 6(VSYNC), 7(HREF), 15(PCLK), 16(D7), 17(XCLK), 3(D6), 46(D5), 10(D4), 11(D0), 12(D2), 13(D3), 45(D1)
INMP441 I2S Microphone6(I2S CLK), 7(I2S WS), 15(I2S SDATA)
Green Status LED18, used for diagnosis to indicate network, data transmission, health, etc.

Product Features

  1. ESP32-S3 WROOM-1-N16R8: Wi-Fi, Bluetooth 5, 240MHz with 16MB Flash and 8MB PS-RAM, 36 programmable GPIOs, AI acceleration support, full speed USB 2.0
  2. Quectel EC200U-CN 4G LTE Cat 1 module with 10Mbps downlink
  3. Built-in GNSS/GPS
  4. Isolated RS485 / RS232 (jumper selector)
  5. Micro SD Card and Nano SIM slot
  6. Single USB Type-B connector for programming and monitoring
  7. DS3231 RTC based on I2C protocol
  8. MS51FB9AE for Data acquisition
  9. 5 ch. 12-bit Analog Inputs 4-20mA / 0-5v
  10. 4 ch. Digital Isolated Inputs (up to 24v)
  11. 2 Relay Output 30v DC / 2A
  12. Protocols: MQTT(s), HTTP(s), DHCP, FTP, Modbus, SPI, I2C, etc.; FOTA supported
  13. 9 - 30v DC Power Supply, PCB size 130x105, separate enclosure available

Other Information

Setup Instructions
Power Supply
  • Connect a regulated DC supply (9–30V) to the power input terminal.
  • Ensure proper polarity to avoid damage.
4G and GPS Setup
  • Attach the 4G antenna and insert a Nano SIM card with an active data plan.
  • Connect an active GPS antenna if required.
Micro SD Card

Insert a Micro SD card (optional) for data logging or additional storage.

Programming
  • Connect the board to your computer via USB Type-B for programming.
  • Use Arduino IDE or similar platforms with ESP32-S3 configuration.
  • Default Baud Rate: 115200.
Web Interface
  • Connect to the hotspot with SSID: iotgateway and password: iot@1234.
  • Access the web interface at iotgateway.local.

Warranty Information

1 Year Seller Warranty

This item is covered with a standard warranty of 1 year from the time of delivery against manufacturing defects only. This warranty is given for the benefit of TwoElectrons customers from any kind of manufacturing defects. Replacement will be done against manufacturing defects.

What Voids Warranty

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

Shipping & Returns Policy

Shipping Policy:
  • Delivery time for orders within India is 7-10 working days. Delivery varies based on location and courier service.
  • Delivery time for orders outside India is up to 20 working days. Delivery varies based on location and courier service.
  • If the item is out of stock, you can still place an order. The estimated delivery time will be notified to you by email.
Return & Refund Policy:
  • Return window: 7 days from receipt unless stated otherwise.
  • No refunds or replacements after the return window.
  • Returns are accepted only for non-working or damaged products.
  • Initiate return requests from here: Return Request or contact us at 09831070550.
  • Refunds are processed within 3-4 working days after inspection and approval.

Main Features

Core Specifications

  • Microcontroller: ESP32-S3 WROOM-1-N16R8
  • Wi-Fi and Bluetooth 5.0
  • AI acceleration support
  • 240 MHz processor with 16MB Flash and 8MB PSRAM
  • Cellular Connectivity: Quectel EC200U-CN 4G LTE Cat 1 module with GNSS/GPS

Interfaces and Connectivity

  • I/O Interfaces:
    • RS485/RS232 (jumper selectable)
    • 5 Analog Inputs (4–20mA / 0–5V)
    • 4 Isolated Digital Inputs (up to 24V)
    • 2 Relay Outputs (30V DC/2A)
  • Memory and Expansion:
    • Micro SD card slot (16GB max)
    • Nano SIM slot
  • Connectivity: Ethernet support (via optional W5500 module)
  • Supported Protocols: MQTT, HTTP, FTP, Modbus, SPI, I2C
  • Over-the-air updates (OTA)

Power and Dimensions

  • Power Supply: 9–30V DC
  • Size: PCB dimensions of 130mm x 105mm

Peripheral Support

  • Cameras (AI Vision)
  • Microphones (I2S Audio)
  • LCDs
  • LoRa modules
SKU: 2EMK2259
₹ 6,300.00
Bulk orders or B2B inquiries?   Email us →

Lead time

QUANTITY DISPATCH
1-10 units Order from India: 7-10 working days
Order outside India: Up to 20 working days
10+ units To be negotiated
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