Seeed Studio 2-Channel Wi-Fi AC Relay Modul Supports Home Assistant and Adds Energy Tracking to Smart Home

Seeed Studio has recently launched a 2-channel Wi-Fi AC Relay Modul built around the XIAO ESP32-C3 Wi-Fi and Bluetooth module. Designed for remote control and energy monitoring, the device can manage two independent 100-240V AC appliances and comes preloaded with ESPHome firmware, making it compatible with Home Assistant for seamless integration.

It also features a BL0942 power meter for real-time and historical energy tracking, supporting a maximum load of 2400W per channel at 240V. Key features include dual relay channels, 2.4GHz Wi-Fi connectivity, and precise energy measurement with a 0.1% error rate. The module is ideal for applications such as energy tracking and smart home automation but may require additional work for wall installation. The company also provides Open-source 3D enclosure designs that you can customize according to your needs.

After going through the specifications, it is very similar to a SONOFF device, and we have previously written about similar SONOFF devices like the SONOFF MINIR4, and the SONOFF POW Elite feel free to check those out if you are interested in SONOFF devices.

Seeed Studio 2-Channel Wi-Fi AC Relay Modul Specifications

• MCU:
  • XIAO ESP32-C3 (ESP32-C3 Wi-Fi 4 and Bluetooth 5.x RISC-V microcontroller)
• Wireless Connectivity:
  • 2.4GHz Wi-Fi
• Relay Channels:
  • 2 independent channels
• Power Input:
  • Terminals: Neutral (N), Live (L)
  • Input voltage: 100-240V AC, 50/60Hz
• Power Output:
  • Terminals:
    • Channel 1: N1 (Neutral), L1 (Live)
    • Channel 2: N2 (Neutral), L2 (Live)
  • Output voltage: 100-240V AC, 50/60Hz
  • Maximum load: 10A per channel, 2400W
• Energy Metering:
  • IC: BL0942 (calibration-free)
  • Active energy measurement error: 0.1%
  • Dynamic range: 4000:1
  • Features: Real-time and historical energy tracking via Home Assistant
• Dimensions:
  • 70 x 58 x 38 mm

As this Wi-Fi AC Relay Modul is built around the XIAO ESP32-C3 module inside there should be a USB-C port which in this case is unused. The company mentions that this module supports ESPHome so it will support Home Assistant natively. Additionally, the company provides open-source 3D-printed files on Thingiverse. More information about the product can be found on the wiki page.

The ESP32-C3-based 2-channel Wi-Fi AC relay is priced at $19.90 and can be directly purchased from the official Seeed Studio store.

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