The Waveshare ESP32-S3 A7670E 4G Development Board, LTE Cat-1 / 2G / WiFi / Bluetooth / Telephone Call / SMS / GNSS is a versatile and high-performance microcontroller development platform. It integrates the A7670E 4G communication module and is powered by the ESP32-S3R2 chip, which features a dual-core processor capable of running at 240 MHz. This board supports low-power WiFi and Bluetooth LE 5.0, making it suitable for a wide range of IoT applications.
The development board is equipped with a variety of interfaces and peripherals, including a camera interface, TF card slot, and USB port, allowing for extensive functionality and expansion. It supports 4G Cat-1/2G networking, GNSS positioning, telephone calls, and SMS, providing robust communication capabilities. The board also includes a GNSS high-precision ceramic antenna and an OV2640 camera, facilitating the development of diverse applications.
Power management features include onboard lithium battery charging, solar charging, and real-time battery capacity measurement, with support for USB and solar power inputs. The board is designed with multiple DIP switches to manage power consumption and avoid interface conflicts. It comes with comprehensive online development resources, including tutorials and demos for IoT applications, such as smart garden solutions and GPS mobile positioning.
Note: Ensure proper handling of the board to avoid damage to its components and peripherals.
Utilizes the ESP32-S3R2 chip with a high-performance Xtensa® 32-bit LX7 dual-core processor, capable of running at 240 MHz
Contains 512KB SRAM, 384KB ROM, 2MB of PSRAM, and 16MB Flash memory
Features integrated 2.4GHz Wi-Fi and Bluetooth LE dual-mode wireless communication with superior RF performance
Includes the A7670E-FASE cellular module, supporting 4G Cat-1/2G networking, GNSS positioning, telephone calls, SMS, and other functions
Equipped with an onboard USB switching IC and DIP switch for using the USB interface of A7670E, suitable for PC connection for dial-up internet or debugging
Supports onboard lithium battery charging, solar charging, power management, battery capacity measurement, and related protection circuits
Features an onboard 18650 battery holder (battery not included) with an anti-reverse protection VBAT pin header for connecting to an external 3.7V lithium battery
Offers rich peripheral interfaces such as a camera interface, TF card slot, USB port, and 38PIN header for easy expansion and functionality
Includes multiple onboard DIP switches for camera on/off, USB channel switching to avoid interface conflict, and power on/off settings for some circuits to reduce power consumption
Comes with a GNSS high-precision ceramic antenna, OV2640 camera, mini speaker, and acrylic case for easy application development
Provides online development resources and a manual, including tutorials and demos for 4G portable WiFi and other IoT examples
Supports frequency bands LTE-FDD: B1, B3, B5, B7, B8, B20
Data transmission rates are ≤5Mbps (UL) and ≤10Mbps (DL)
GNSS supports GPS, BeiDou, and GLONASS
Power supply options include USB port, 18650 lithium battery holder (battery not included), and pin header
Power input options are 5V (USB port / 5V pin header) and 3.7~4.2V (18650 lithium battery holder / VBAT pin header)
Logic level is 3.3V
Supports multi-band LTE Cat-1/2G
Provides a portable 4G WiFi solution
Compatible with Windows/Linux for dial-up internet
Supports telephone calls and SMS
Capable of image recognition
Supports charging via solar panel or USB port
GNSS positioning supports GPS, BeiDou, and GLONASS
If you are not satisfied with a product purchased from the Site, you may request a return within 30 days from the delivery date, unless the product is listed under the Return Exceptions below or is subject to specific return conditions noted on the product page.
This return policy also applies, as a minimum standard, to products sold and fulfilled by third-party vendors through the Marketplace.
Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at the Vendor's discretion. See the Warranty section.
Return Conditions
To qualify for a refund under the 30-day return policy, all of the following conditions must be met:
A valid Return Authorization (RA) number must be obtained prior to returning the product. Returns without an RA number will be refused.
The RA number is valid for 30 days. The returned item must be received within that period.
The RA number must be included with the return.
Products must be returned in unused, unmodified condition (e.g., no scratches, alterations, missing parts, or signs of installation/use) and in their original packaging, suitable for resale.
Shipping fees are non-refundable. Return shipping costs are the responsibility of the customer, except in cases of a product confirmed defective through RobotShop's troubleshooting process or of a verified shipping error by RobotShop.
Refunds are processed within 7 days after receipt and inspection of the returned item.
A $100 cleaning fee may apply to domestic robots returned in used or unclean condition.
A 20% restocking fee may apply to large-quantity returns of items ordered specifically for the customer from the manufacturer or not part of RobotShop's standard inventory.
Return Exceptions
The following products are not eligible for return or refund under this policy:
Used, damaged, or modified products — Items that show signs of use, wear, or alteration, making them unsuitable for resale.
Consumables — Use and wear-and-tear components, altered or depleted through use (e.g., batteries, belts, brushes, gears, filament, tires, disposable bags, lubricants, greases, waxes, etc.). Not eligible for return once opened or used.
Perishables — Goods liable to deteriorate or expire rapidly. Not eligible for return.
Sealed goods (health or hygiene) — Items sealed for health-protection or hygiene reasons (e.g., masks, gloves, odor-absorbing products). Not eligible for return once unsealed.
Build-it-yourself products and items requiring customer assembly — Including robots & kits, robot parts, and other products requiring assembly or soldering. Not eligible for return once assembled, soldered, or installed.
Digital Goods, Software, and Apps — Final sale only, due to licensing restrictions.
Clearance Items — Products identified as clearance or final sale, including end-of-life or discontinued items.
Custom-made, personalized, or special-order items — Products manufactured, configured, adapted, or built to the customer's own specifications and requirements.
On-Demand Items — Standard catalogue products not stocked by RobotShop and ordered specifically to fulfill a customer request.
While the same return policy applies, these orders require a separate contact process for returns.
RobotShop Fulfilled Orders → submit a support ticket from your account under My Support Tickets.
Marketplace Vendor Orders → submit a ticket from your account under My Marketplace Tickets to contact the vendor directly.
Note: Marketplace vendor products are normally labelled with SKUs starting with RM, and identified on the product page with the mention "Sold and fulfilled by [Vendor Name]".
