Smart Zigbee Relay with Energy Monitoring: A Comprehensive Review

This comprehensive review delves into the features and functionality of a smart Zigbee relay with integrated energy monitoring. We examine its design, installation, and integration with popular smart home platforms like Tuya Smart, Smart Life, and Home Assistant. The review covers both the basic operation and advanced automation capabilities, highlighting its versatility and ease of use for both novice and experienced smart home enthusiasts. Particular attention is paid to the accuracy and usefulness of its energy monitoring capabilities, a key differentiator in the crowded smart home relay market.From unpacking and initial setup to advanced Home Assistant integrations and automation examples, this review provides a thorough assessment of this smart relay's performance and value. We explore its compatibility with various protocols, including Wi-Fi and Zigbee, and discuss the benefits of each. Ultimately, we determine whether this device lives up to its promises and justifies its position as a compelling option for enhancing any smart home ecosystem.

Pros And Cons

Smart Relay with Energy Monitoring
  • Energy monitoring allows tracking of energy consumption and expense management.
  • Compact dimensions (40x40x41 mm) for easy installation in standard switch housing.
  • Two connection types: Zigbee 3.0 and Wi-Fi.
  • Tuya compatibility (works with Tuya Smart and Smart Life apps).
  • Multiple restart modes (default on, off, or remember last state).
  • Timer function to set on/off times.
  • Device grouping for convenient control of multiple devices.
  • Compact and minimalist design for easy installation.
  • Can be used with or without a smart home connection.
  • Supports Home Assistant integration.
  • Supports Zigbee2MQTT integration.
  • Kit does not include DIN rail mounts (may be included in other versions).

Read more: AMI Meter Reading Guide: Understanding Your Smart Electricity Meter

Unboxing and First Impressions

The relay arrived in a compact cardboard box, featuring a schematic image on the front and key specifications on the back, clearly indicating support for both Wi-Fi and Zigbee protocols.

The relay box showing the schematic
The relay box showing the schematic

Inside, I found the relay itself and a concise instruction manual. The manual includes a wiring diagram and step-by-step instructions for integration with Tuya Smart and Smart Life.

The contents of the box: relay and manual
The contents of the box: relay and manual

The relay's design is minimalist and compact, ensuring easy installation even in smaller wall boxes. A small button on the front allows for manual on/off control and pairing mode activation, complemented by an LED indicator.

Close-up view of the relay's compact design
Close-up view of the relay's compact design

Technical Specifications and Internal Components

The relay operates on a voltage range of 100-240V and supports a maximum current of 16A, suitable for most household appliances.

Specification of the voltage and current
Specification of the voltage and current

Its compact dimensions (40x40x41 mm) allow for easy installation in standard switch boxes. Connectivity options include both Zigbee 3.0 (requiring a gateway) and Wi-Fi (gateway-free).

Close-up of the BL0932 microcircuit
Close-up of the BL0932 microcircuit

Internally, the relay utilizes a BL0932 energy measurement microcircuit for accurate power consumption monitoring, a ZTU controller for data processing and app control, and a Fanharf 17-1A2 TLE relay for load switching.

Close-up of the Fanharf relay
Close-up of the Fanharf relay

Installation and Wiring

The installation process is straightforward. Ensure the power is off before connecting the wires.

Relay installed in a wall box
Relay installed in a wall box

Connect the phase (L IN) and neutral (N IN) wires from your mains supply to the appropriate terminals on the relay.

Using an indicator screwdriver to identify the phase wire
Using an indicator screwdriver to identify the phase wire

Connect the load (L OUT, N OUT) and optionally, an external switch (S1, S2) according to the provided wiring diagram.

Wiring diagram
Wiring diagram

Smart Home Integration and App Control

Integration with Tuya Smart and Smart Life apps is seamless. Put the relay into pairing mode by holding down the button.

Putting the relay into pairing mode
Putting the relay into pairing mode

Add the device through the app, following the on-screen instructions. The app provides a simple on/off toggle, along with timer functions, energy monitoring statistics, and settings.

App interface showing relay status
App interface showing relay status

The app allows for scheduling, countdown timers, and monitoring of energy consumption (voltage, current, power, and total energy consumed).

Energy monitoring statistics in the app
Energy monitoring statistics in the app

Home Assistant Integration

The relay integrates well with Home Assistant using the Tuya integration (cloud or local).

Home Assistant interface showing Tuya integration
Home Assistant interface showing Tuya integration

Once added, Home Assistant provides access to relay status, power monitoring data (voltage, current, power), and configuration options.

Home Assistant showing relay details
Home Assistant showing relay details

Direct connection via Zigbee2MQTT offers even more granular control and data access.

Home Assistant interface with Zigbee2MQTT integration
Home Assistant interface with Zigbee2MQTT integration

Automation Capabilities

The relay excels as both a trigger and an action within Home Assistant automations. Use the relay's state, timers, power failure mode, and external switch status to create various scenarios.

Automation section in Tuya app
Automation section in Tuya app

Advanced automations can monitor power consumption and trigger actions based on current, power, and voltage thresholds (though this requires more advanced integrations like Zigbee2MQTT).

Automation trigger options
Automation trigger options

Automations can easily control lighting, appliances, and more complex systems.

Automation action options
Automation action options

Conclusion

This smart relay offers a compelling combination of affordability, functionality, and extensive smart home integration capabilities.

The built-in energy monitoring is a significant advantage, allowing for precise tracking of energy consumption and optimization of device usage.

Its compatibility with Tuya, Home Assistant, and Zigbee2MQTT makes it a versatile choice for various smart home setups. The relay's ease of use, coupled with advanced automation features, makes it highly recommended for DIY smart home enthusiasts.