meross WiFi Water Timer MST100 for Garden Hose with WiFi Hub - Instruction Manual

1. Product Overview

The meross WiFi Water Timer MST100 is designed to automate garden hose watering, offering smart control and scheduling through a WiFi hub. It features durable brass construction for reliable performance and integrates with smart home platforms like Apple HomeKit, Alexa, and Google Assistant.

Image 1.1: The meross WiFi Water Timer MST100, its accompanying WiFi hub, and a smartphone displaying the control application.

2. Package Contents

• meross WiFi Water Timer (MST100)
• meross WiFi Hub (MSH400)
• User Manual
• (Batteries not included, requires 4 x 1.5V AA batteries)

3. Setup Instructions

3.1. Install the Meross App

Download the Meross app from the Apple App Store, Google Play Store, or Amazon Appstore. Search for "Meross".

Image 3.1: Visual guide for connecting the WiFi Hub, including app download instructions.

3.2. Connect the WiFi Hub (MSH400)

1. Power on the WiFi hub.
2. Ensure your smartphone is connected to a 2.4GHz WiFi network. The meross devices are only compatible with 2.4GHz networks.
3. Open the Meross app, click the "+" icon, and follow the in-app instructions to add the Smart Hub (MSH400).

3.3. Install Batteries in the Water Timer

The battery compartment is tightly secured due to its waterproof design. Use a screwdriver to gently pry it open from both sides. Insert 4 x 1.5V AA batteries, ensuring correct polarity.

Image 3.2: Detailed steps for battery installation and pairing the water timer with the hub.

3.4. Pair the Water Timer with the WiFi Hub

1. After inserting batteries, press the button on the sprinkler timer twice. The indicator light will flash.
2. Press the hub button twice. The hub indicator light will flash.
3. Wait a few seconds until the indicator light on both devices stops flashing, indicating successful pairing.

3.5. Install the Water Timer

Connect the meross WiFi Water Timer to any standard outdoor faucet. The brass inlet and outlet ensure a durable and leak-free connection. Attach your garden hose to the timer's outlet.

Image 3.3: The meross water timer connected to an outdoor faucet and a garden hose, highlighting the brass fittings.

4. Operating Instructions

4.1. Manual Watering

To initiate manual watering, press the button on the water timer once. The default watering duration is 15 minutes, which can be adjusted via the Meross app. The timer will automatically shut off after the set duration.

Image 4.1: Manual watering initiated by pressing the timer button.

4.2. Scheduling Watering Plans

Use the Meross app to create customized watering schedules. You can set start times, durations (from 1 minute to 11 hours 59 minutes), and frequencies (e.g., specific days of the week, odd/even days, or custom intervals). Schedules will operate even if the sprinkler timer is offline.

Image 4.2: Example watering plans configured within the Meross app.

4.3. Smart Weather Skip

The WiFi sprinkler timer utilizes hyper-local weather data to automatically skip watering cycles. This feature prevents overwatering and conserves water by skipping schedules during or after rain, or in freezing/windy conditions.

Image 4.3: The Smart Weather Skip function, showing how the timer adapts to various weather conditions.

4.4. Smart Home Integration

The meross WiFi Water Timer integrates with Apple HomeKit, Amazon Alexa, and Google Assistant. This allows for voice control and remote management of your watering system. Note that Apple HomeKit automation is not supported by this specific smart hose timer.

• Alexa: "Alexa, open the sprinkler timer."
• Siri: "Hey Siri, open the sprinkler timer."
• Google Assistant: "Hey Google, open the sprinkler timer."

Image 4.4: Voice control functionality with smart assistants.

4.5. Water Usage Tracking and Alerts

The Meross app provides detailed water consumption data, allowing you to monitor usage and manage resources effectively. You will also receive instant notifications for any issues detected with your water timer, such as low battery or water flow anomalies.

Image 4.5: Water usage monitoring interface in the Meross app.

5. Maintenance

To ensure the longevity and optimal performance of your meross WiFi Water Timer, consider the following maintenance guidelines:

• Battery Replacement: Replace the 4 x 1.5V AA batteries when the Meross app indicates a low battery level. Ensure correct polarity during installation.
• Cleaning: Periodically inspect the brass inlet and outlet for any debris or mineral buildup. Clean gently with a soft brush if necessary to maintain proper water flow and prevent leaks.
• Winterization: Before the first frost, disconnect the water timer from the faucet and hose. Store it indoors in a dry, protected area to prevent damage from freezing temperatures.
• Connection Integrity: Regularly check all connections for tightness to prevent leaks. The durable brass construction is designed for corrosion resistance, but proper sealing is crucial.

6. Troubleshooting

• Device Not Connecting to WiFi:
  • Ensure your WiFi network is 2.4GHz. The meross WiFi Water Timer and Hub are not compatible with 5GHz networks.
  • Verify that the WiFi hub is powered on and within range of your router.
  • Check that your smartphone is connected to the 2.4GHz network during the initial setup process.
  • Restart your router, WiFi hub, and water timer, then attempt pairing again.
• Water Timer Not Responding:
  • Check the battery level in the Meross app. Replace batteries if low.
  • Ensure the water timer is properly paired with the WiFi hub (refer to Section 3.4).
  • Verify that the faucet is turned on.
• Leaks at Connections:
  • Ensure all connections (faucet to timer, timer to hose) are tightened securely.
  • Check for damaged washers and replace if necessary.
  • Confirm the brass fittings are free from debris.
• Watering Schedule Not Activating:
  • Review your schedule settings in the Meross app for correct times, durations, and frequencies.
  • Check the Smart Weather Skip feature. If enabled, watering might be skipped due to current or forecasted weather conditions (rain, frost, wind).
  • Ensure the water timer has sufficient battery power.
• Difficulty Opening Battery Compartment:
  • The compartment is designed to be waterproof and is tightly secured. Use a small screwdriver to gently pry it open from both sides as indicated in the setup instructions.

7. Specifications

8. Warranty and Support

For warranty information, technical support, or further assistance, please visit the official meross website or contact meross customer service. Details can typically be found on the product packaging or within the Meross app's support section.

You can also find more information and support resources on the meross Amazon Store.