Third Reality Smart Plug Gen3 Review: Energy Monitoring and Automation Features

Smart plugs are one of the easiest ways to start building a smarter home. They let you control lights, fans, and small appliances from your phone or voice assistant, and many now include energy monitoring to track power usage. Third Reality, a leading brand in Zigbee and Matter smart home devices, has released the Smart Plug Gen3, the latest iteration of its popular smart plug line. This review covers the design, setup, energy monitoring capabilities, automation features, and how it compares to previous generations.

The Third Reality Smart Plug Gen3 builds on the success of the Gen2 with improved energy monitoring accuracy, a more compact design, and enhanced Zigbee 3.0 compatibility. Whether you're looking to reduce your electricity bill, automate your home, or simply add voice control to dumb devices, this plug promises to deliver. Let's dive into the details.

Design and Build Quality

The Smart Plug Gen3 features a sleek, white, compact form factor that won't block adjacent outlets. It measures approximately 1.5 inches wide and 2 inches tall, making it one of the smallest smart plugs on the market. The front panel has a manual on/off button with a built-in LED indicator that shows power status. The build quality feels solid, with a matte finish that resists fingerprints. The plug supports a maximum load of 15A (1800W), suitable for most household appliances.

Compared to the Smart Plug Gen2, the Gen3 is about 20% smaller and has a redesigned LED that can be dimmed or turned off via the app. This is a welcome improvement for those who find bright LEDs distracting in bedrooms or living rooms. The plug also has a side-mounted reset button for easy pairing and factory resets.

• Compact design: 1.5 x 2 inches, won't block adjacent outlets.
• Manual on/off button with dimmable LED indicator.
• Rated for 15A/1800W, suitable for most appliances.

Setup and Compatibility

Setting up the Smart Plug Gen3 is straightforward. For Zigbee networks, you can pair it directly with a Zigbee coordinator like the Third Reality USB-C Dongle or a Smart Hub. The process involves plugging in the device, putting it into pairing mode (press and hold the button for 5 seconds), and scanning with your hub's app. I tested it with Home Assistant and the Third Reality app, and both recognized the plug within seconds.

The plug supports Zigbee 3.0, ensuring broad compatibility with popular smart home platforms including Amazon Alexa, Google Home, and SmartThings. It also works with Matter via a firmware update (requires a Matter controller). For those using Home Assistant, the plug exposes entities for power, energy, current, voltage, and switch state, making it highly customizable.

• Pair via Zigbee 3.0 with any compatible hub.
• Works with Alexa, Google Home, SmartThings, and Home Assistant.
• Matter-ready with future firmware update.

Energy Monitoring Features

One of the standout features of the Smart Plug Gen3 is its precise energy monitoring. It tracks real-time power consumption (watts), cumulative energy usage (kWh), current (amps), and voltage. The data is updated every few seconds, allowing you to see exactly how much energy your devices are using. In my tests, the readings were within 2% of a reference meter, which is excellent for a consumer-grade device.

The Third Reality app provides a clear dashboard with daily, weekly, and monthly energy usage graphs. You can set energy cost per kWh to see estimated costs. Additionally, the plug supports power monitoring triggers: for example, you can create an automation to turn off a space heater if it draws more than 1500W, or send a notification if a device's power usage drops (indicating it turned off unexpectedly). This level of detail helps you identify energy hogs and optimize usage.

• Measures power, energy, current, and voltage with high accuracy.
• App dashboard with daily/weekly/monthly graphs and cost estimation.
• Automation triggers based on power thresholds.

Automation and Smart Scenes

The Smart Plug Gen3 shines in automation. Using the Third Reality app or your preferred smart home platform, you can create schedules, timers, and scenes. For example, you can set a timer to turn off a coffee maker after 30 minutes, or schedule a lamp to turn on at sunset. The plug also supports 'away mode' that randomizes on/off times to simulate occupancy.

Integration with other Third Reality devices enhances automation possibilities. For instance, you can use a Door and Window Sensor to turn on a lamp when a door opens, or trigger a Smart Plug to turn off a fan when a Smart Presence Sensor detects no one in the room. The Zigbee network ensures low-latency responses, typically under 200ms. You can also combine the plug with the Remote Plus V2 for manual scene control.

• Schedules, timers, and away mode for security.
• Trigger actions from Third Reality sensors like door/window or presence.
• Low-latency Zigbee response for real-time automation.

Smart Plug Gen3 vs Gen2: What's New?

If you own the Smart Plug Gen2, you might wonder if an upgrade is worth it. The Gen3 offers several improvements: smaller size, dimmable LED, better energy monitoring accuracy (2% vs 5% error), and Matter readiness. The Gen3 also has a slightly higher maximum load (15A vs 12A) and improved heat dissipation for safer operation at high loads.

However, if you don't need Matter or ultra-precise monitoring, the Gen2 remains a capable device. For new buyers, the Gen3 is the clear choice given its future-proofing and enhanced features. The price difference is minimal, making the Gen3 the better value.

• Gen3: smaller, dimmable LED, 2% energy accuracy, Matter-ready.
• Gen2: larger, fixed LED, 5% accuracy, no Matter support.
• Gen3 supports 15A load vs Gen2's 12A.

Pros and Cons

To summarize, here are the key advantages and drawbacks of the Third Reality Smart Plug Gen3.

• Pros: Compact design, accurate energy monitoring, wide platform compatibility, Matter-ready, affordable price.
• Cons: No built-in USB port, requires a Zigbee hub for full functionality, LED cannot be completely turned off (only dimmed).

The Third Reality Smart Plug Gen3 is a top-tier smart plug that excels in energy monitoring and automation. Its compact design, high accuracy, and broad compatibility make it a great choice for anyone looking to save energy and automate their home. Whether you're a beginner or a seasoned smart home enthusiast, this plug delivers reliable performance. Explore the Smart Plug Gen3 (Power Metering) on the Third Reality store to see how it can enhance your smart home setup.