The XIAO 2-Channel Wi-Fi AC Energy Meter Bundle Kit is an intelligent energy meter that is aimed at monitoring and controlling the consumption of home or solar energy. It consists of a dual-channel AC energy meter, which uses the XIAO ESP32-C6 microcontroller and can be easily integrated with Home Assistant to collect real-time data and use smart automation. The kit is equipped with two 100A non-invasive current transformers, which are used to measure current accurately, a BL0939 metering chip of up to 1% accuracy and a 2.81dBi 2.4GHz antenna that provides stable wireless connectivity.
It has a bi-directional power flow decision which allows users to measure the energy consumption as well as the solar production, which makes it suitable in smart homes, solar installations and energy management systems. The unit is 100-240 V AC powered and uses a 3D-printed housing, and provides detailed energy analytics by using Home Assistant to enable the user to optimise power consumption and minimise energy bills.
Previously, we have covered ESP32-based products, including the Elecrow CrowPanel, the Air quality monitoring kit, the WiFIRCard, and others. Feel free to check those out for your reference.
XIAO 2-Channel Wi-Fi Energy Meter Specifications:
- Processor: XIAO ESP32-C6 microcontroller with native ESPHome firmware
- Power Monitoring IC: BL0939 calibration-free metering chip
- Current Transformers:
- Detection range: 0–100A
- Accuracy: ±1%
- Turns ratio: 1:2000
- Dielectric strength: AC 3.5kV/1min @ 50Hz
- Channels: 2 independent CT sensor inputs for dual-circuit monitoring
- Power Supply: 100–240V AC, 50/60Hz
- Connection: 2.4GHz Wi-Fi and external rod antenna 2.81dBi.
- Measurement Capability: Bi-directional (solar production and energy consumption).
- Integration: ESPHome native support of Home Assistant.
- Enclosure: Customisable (open-sourced on Thingiverse) white case 3D-printed.
- Dimensions: 58 x 70 x 38 mm
Included Accessories:
- Two 100A–50mA non-invasive CT clamps
- 2.81dBi 2.4GHz rod antenna
- 30cm 3-core 1.0 sq. mm copper cable
The XIAO 2-Channel Wi-Fi AC Energy Meter is also pre-flashed with ESPHome firmware, as well as being ESphomemade, meaning that it is ready to be easily integrated with Home Assistant out of the box. The device can also be configured and controlled by the user without complex settings, just by clicking a button in their Home Assistant dashboard. The software is open-source, making it customisable and community-driven updates, meaning that it will be compatible with a broad selection of different smart home automation systems. Moreover, it supports ESPHome, which makes it capable of real-time data visualisation, automation triggers, and historical energy analytics, which offers a flexible and user-friendly software environment to new and advanced users.
The XIAO 2-Channel Wi-Fi AC Energy Meter Bundle Kit currently sells at $14.90 per meter, and each 100A non-invasive CT sensor is being sold at $6.90, which makes the total Bundle (meter + two CTs, antenna and cables) cost approximately $28.70. The stores in Europe sell it slightly more, around 30 or CHF 33 per the whole kit, depending on the region. It is usually available on large resellers such as Seeed Studio, AliExpress and Antratek, and the warehouses are distributed globally. Others also cite that it could be soon sold through Amazon, and give an even wider choice of purchases based on locality.
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