THIRDREALITY Smart Watering Kit PRO - Automatic Watering Potted Plants

The ThirdReality Smart Watering Kit Pro is a Zigbee 3.0 irrigation solution that automatically waters your houseplants exactly when needed. The Pro version has one major upgrade over the standard kit: you choose how to power it. Connect the included USB-C cable for continuous power, or use 4 AA batteries (not included) for completely wireless operation. If both are present, the device automatically prioritizes USB-C and switches to battery power during an outage. Ideal for holidays or areas without a nearby power outlet.

Dual power: USB-C and battery

With the included USB-C cable, the system runs on continuous power without you having to worry about batteries. If you choose battery power, a red flashing LED (top left, twice) indicates that the batteries are running low. This ensures your plants never dry out due to a dead battery.

Fully adjustable, precisely enough water

Using the three buttons on the device, you can set the watering duration from 10 seconds to 16.5 minutes and the interval from 1 to 30 days. The adjustable water dripper regulates the flow rate per plant. The system delivers approximately 60 ml of water per 10 seconds at maximum flow, which is perfect for drip irrigation of potted plants.

Easy expansion for more plants

The standard kit comes with 2 water drippers and 2 T-connectors, allowing you to connect two plants directly. Do you have a larger collection? With the ThirdReality Watering Kit Expansion Set, you can scale up to a maximum of 10 additional plants. This set includes 10 meters of tubing, 10 water drippers, 10 T-splitters, 10 tube holders, and 3 extra filters, all installable without tools.

Safe: anti-backflow and dry-run protection

A built-in check valve prevents siphoning, even if the hose outlet is lower than the water reservoir. Preferably place the water supply at the same height or higher than the device. In Home Assistant (ZHA and Zigbee2MQTT), a "Low Water" notification is automatically activated if no water flow is measured for 20 seconds. This prevents the pump from running dry.

Expansion to Apple Home and Google Home

Via the optional ThirdReality Smart Bridge MZ1 (sold separately), you can translate Zigbee to Matter, integrating the kit into Apple Home and Google Home. Firmware updates are performed wirelessly via the 3R-Installer App.

Technical specifications

• Protocol: Zigbee 3.0
• Power supply: USB-C (cable included) or 4x AA battery (not included); USB-C takes priority if both are present
• Watering duration: adjustable from 10 seconds to 16.5 minutes
• Water interval: adjustable from 1 to 30 days
• Water output: approximately 60 ml per 10 seconds (maximum flow)
• Dimensions: 114 × 84 × 34 mm
• Protection: built-in check valve, dry-run detection via Home Assistant
• Display: LED segment display
• Hose length: 3 meters (included)
• Hose diameter: 4 mm (inner diameter)
• OTA updates: via 3R-Installer App
• Expandability: up to 10+ plants with expansion set (sold separately)
• Box contents: device × 1, USB-C cable × 1, hose 3m × 1, T-connector × 2, water dripper × 2, filter × 1, ground stake × 2, manual × 1

Compatibility with Home Assistant and Homey

Home Assistant: ThirdReality is an official Works with Home Assistant partner, and the Watering Kit Pro works completely locally via ZHA and Zigbee2MQTT, without cloud or a dedicated app. Pairing is done by plugging in the USB-C cable or inserting batteries: the device automatically enters pairing mode. To re-pair, hold down the start/stop button for about 5 seconds until the blue LED starts flashing.

In Home Assistant, the following entities appear after pairing:

• Switch entity: manually turn watering on or off, or use it as an action in automations
• Battery (%): shows the remaining battery charge as a percentage
• Battery (mV): shows the voltage value in millivolts
• Low Battery (binary): warns when the battery is low
• Low Water (binary): activates if no water flow is detected for 20 seconds

The device acts as a Zigbee EndDevice in your mesh network. The status synchronizes accurately between Home Assistant and the physical device, so you can see exactly when and for how long water was supplied in your logs.

Homey: The Watering Kit Pro works seamlessly via the official Third Reality app on Homey Bridge and Homey Pro. Build flows with triggers from the ThirdReality Smart Soil Moisture Sensor Gen2 for fully automated watering based on soil moisture.

Practical automation examples

Smart watering based on soil moisture: Combine the Watering Kit Pro with the ThirdReality Smart Soil Moisture Sensor Gen2 in Home Assistant. Set up an automation that checks if the soil moisture drops below 30%. If so, between 07:00 and 21:00, the pump activates for 45 seconds (approx. 270 ml). After 10 minutes, the automation rechecks if a second watering is needed. You receive a push notification on your phone as soon as the system has watered, even if you are on the other side of the world.

Multi-plant system for larger collections: Connect two plants directly with the included T-connectors. Do you have more plants? Then order the ThirdReality Watering Kit Expansion Set and scale up to a maximum of 10 additional plants. Combine multiple moisture sensors to individually monitor soil moisture per plant and trigger separate watering sessions via Home Assistant.

Frequently Asked Questions (FAQ)

Are batteries included?

No, the Pro version does not come with batteries. You can add 4 AA batteries as a backup or for wireless use. The USB-C cable is included for continuous power.

How long do the batteries last?

The lifespan depends on the frequency of use. With daily use of about 2 minutes once a day, you can expect several months. The device reports battery percentage, millivolt value, and a binary low-battery status to Home Assistant.

How many plants can I connect with the standard kit?

The Pro kit includes 2 water drippers and 2 T-connectors, allowing you to connect 2 plants directly. With the Watering Kit Expansion Set, you can expand to a maximum of 10 additional plants.

How do I pair the device with Home Assistant?

Plug in the USB-C cable or insert the batteries: the device automatically enters pairing mode. To re-pair, hold down the start/stop button for about 5 seconds until the blue LED flashes. It works with ZHA and Zigbee2MQTT, without an additional app or cloud.

Do I need a separate hub?

Yes, a Zigbee hub is required and not included. Examples include a Home Assistant installation with a Zigbee dongle, Homey Pro, Homey Bridge, or an Amazon Echo with built-in Zigbee support.

Does it also work with Apple Home or Google Home?

Not directly. Via the ThirdReality Smart Bridge MZ1 (sold separately), you can add Matter support, which then supports Apple Home and Google Home.

Is the moisture sensor included?

No, the ThirdReality Smart Soil Moisture Sensor Gen2 is sold separately. Without a sensor, you use the system based on time schedules.

Does the system also work outdoors?

The device has no IP rating and is suitable for indoor use only. The hoses and drippers can be used outdoors, but always protect the device itself from moisture and direct rainfall.

How much water does it deliver per session?

At maximum flow, the system delivers approximately 60 ml per 10 seconds. For a watering duration of 45 seconds, you give a plant about 270 ml. The exact amount can be finely adjusted via the adjustable water dripper.

Can I use my own hose?

The included hose has an inner diameter of 4 mm. If you use your own hose, ensure that the diameter matches the included connectors for a good seal.

How do I prevent the reservoir from siphoning empty?

The device has a built-in check valve that actively blocks siphoning. Preferably place the reservoir at the same height or higher than the device for the most reliable operation.

How do I place the water reservoir?

Submerge the hose in a bucket, bottle, or tank, and the pump system will draw water to the plants. Ensure the reservoir is not too far below the device for optimal water pressure.

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