eSync ESP32-C3 Smart Switch DIY Dev Board w/ Dual 7A Relays
eSync ESP32-C3 Smart Switch DIY Dev Board w/ Dual 7A Relays - Image 2
eSync ESP32-C3 Smart Switch DIY Dev Board w/ Dual 7A Relays - Image 3
SKU: IOWC-1453
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eSync ESP32-C3 Smart Switch DIY Dev Board w/ Dual 7A Relays

₹2,500.00 (Inclusive of all taxes)
Out of Stock

The eSync ESP32-C3 Smart Switch DIY Dev Board is a mains-powered IoT control module built around the ESP32-C3 RISC-V SoC, featuring integrated 2.4GHz Wi-Fi and BLE 5.0 for smart home automation. It directly accepts 110-240V AC input and provides dual 7A relay outputs for appliance control.

Features

  • ESP32-C3 RISC-V Core: Features the ESP32-C3-WROOM-02 module with a 160 MHz 32-bit RISC-V processor for efficient IoT control and wireless connectivity.
  • Integrated AC-DC Power: Onboard Hi-Link HLK-PM01 converter allows direct operation from 110-240V AC mains, eliminating external power supplies.
  • Dual High-Current Relays: Equipped with two G5LE-1 relays rated for 7A at 220V AC, enabling reliable control of lights, fans, and appliances.
  • USB-C Programming & OTA: USB Type-C interface simplifies firmware flashing via Arduino IDE or ESP-IDF, with support for Over-The-Air updates.
  • Manual Switch Interface: Dedicated GPIO inputs allow connection to physical wall switches for local control alongside wireless operation.

Out of stock

Description

The eSync ESP32-C3 Smart Switch Dev Board is engineered for direct integration into AC mains-powered smart home and industrial automation systems. Its core is the ESP32-C3-WROOM-02 module, which combines a 160 MHz RISC-V processor with 2.4GHz 802.11 b/g/n Wi-Fi and Bluetooth Low Energy 5.0, providing a robust wireless foundation for IoT applications. The board’s integrated Hi-Link AC-DC converter simplifies installation by accepting a wide 110-240V AC input range, delivering stable 5V and 3.3V rails to power the logic and relays.

Designed for reliability, the board features two electromechanical relays capable of switching up to 7A loads at 220V AC, suitable for controlling a wide range of household and light industrial equipment. A USB Type-C port provides direct access to the UART for programming and debugging, while GPIO20 and GPIO21 serve as serial pins. The compact form factor and pre-soldered components make it a ready-to-deploy solution for developers building scalable, remotely managed automation nodes with OTA update capability.

Key Features

  • Mains-Powered IoT Node: Integrated HLK-PM01 AC-DC converter enables direct operation from standard wall outlets (110-240V AC, 50/60Hz).
  • Dual-Channel Appliance Control: Two independent 7A SPDT relays provide safe switching for high-power AC loads like heaters, motors, and lighting circuits.
  • Wireless Connectivity Suite: Built-in 2.4GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5.0 (BLE) support for local control and cloud integration via MQTT or HTTP.
  • Developer-Friendly Interface: USB Type-C connector for easy programming and serial monitoring, compatible with Arduino IDE, ESP-IDF, and PlatformIO.
  • Local Physical Control: GPIO-based switch inputs (active low) allow connection to manual toggle switches for fallback or local operation.
  • Over-The-Air Updates: Supports secure OTA firmware upgrades for remote deployment and maintenance without physical access.
  • Compact Industrial Design: Pre-assembled PCB with clear silkscreen and terminal blocks for reliable wiring in enclosure-based projects.

Applications

  • Smart Home Automation: Control lighting, ceiling fans, electric curtains, and power outlets via Wi-Fi or BLE from smartphone apps or voice assistants.
  • Industrial IoT Control: Remote switching of machinery, pumps, ventilation systems, and signage in workshops or agricultural settings.
  • Energy Management Systems: Integrate into home energy monitors for scheduled or sensor-triggered control of high-wattage appliances.
  • DIY Security & Safety: Build automated systems for garage doors, entry gates, or emergency lighting triggered by sensors or schedules.

Technical Specifications

Microcontroller / SoCESP32-C3-WROOM-02 (RISC-V 32-bit, up to 160 MHz)
Wireless ProtocolsWi-Fi 802.11 b/g/n (2.4 GHz), Bluetooth Low Energy 5.0
Input Voltage110–240 V AC, 50/60 Hz
Output Power (DC)5V DC @ 0.6A (3W max)
Relay Specifications2 x G5LE-1, 7A @ 220V AC (SPDT), Active High Logic
Manual Switch Interface2 x GPIO Inputs (Active Low)
Programming InterfaceUSB Type-C (UART: GPIO20-TX, GPIO21-RX)
Onboard Power SupplyHi-Link HLK-PM01 AC-DC Converter
Voltage RegulatorAMS1117 (3.3V)
Status IndicatorGPIO1 LED
Operating TemperatureNot Specified
Dimensions65 x 44 x 20 mm
Weight57 g

Frequently Asked Questions

How do I program the eSync ESP32-C3 Smart Switch board?

Connect the board's USB Type-C port to your computer. In the Arduino IDE, install the ESP32 board support via Boards Manager. Select 'ESP32C3 Dev Module' as the target. The default UART pins for programming are GPIO20 (TX) and GPIO21 (RX). You can upload code via the serial port and later use OTA updates for wireless firmware deployment after initial network configuration.

What is the correct wiring for connecting AC loads and wall switches?

For load control, connect the Live (Line) wire to the relay's common (COM) terminal and the load wire to the Normally Open (NO) terminal. The Neutral wire goes directly to the load. For manual switch inputs, connect one side of a physical toggle switch to a designated GPIO input pin and the other side to ground. The inputs are active-low, so the GPIO reads LOW when the switch is closed. Ensure all high-voltage wiring complies with local electrical codes and is properly insulated.

Can this board operate on 110V AC power, or is it only for 220V?

Yes, the onboard Hi-Link HLK-PM01 AC-DC converter supports a wide input range from 110V to 240V AC at 50/60 Hz. This makes the board suitable for use in North America (110-120V) and Europe/Asia (220-240V) without modification. The converter outputs a stable 5V DC, which is then regulated to 3.3V for the ESP32-C3 module and logic circuits, ensuring consistent operation across different mains voltages.

What software frameworks and protocols are supported for IoT integration?

The board is compatible with Espressif's ESP-IDF framework, Arduino Core for ESP32, and MicroPython. For IoT connectivity, you can use Wi-Fi or BLE 5.0 with protocols like MQTT for cloud communication, HTTP for REST APIs, or Bluetooth Mesh for local networks. Libraries such as AsyncMqttClient or PubSubClient enable integration with platforms like Home Assistant, AWS IoT, or Blynk. OTA updates are supported via ArduinoOTA or native ESP-IDF mechanisms.

Package Includes

  • 1 x eSync ESP32-C3 Smart Switch DIY Dev Board

Additional Information

Weight 0.06 kg
Dimensions 9 × 6 × 3 cm

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