Meross MST100 - Apple Homekit watering controller + timer

Meross MST100-EU HomeKit Smart Watering Timer

The MEROSS MST100-EU smart watering timer simplifies garden irrigation by automating your watering routines. Compatible with Apple HomeKit, Amazon Alexa, Google Home, and SmartThings, it allows you to control your outdoor tap remotely via smartphone or voice commands. Designed to optimise water usage while maintaining healthy plants, it combines convenience with efficiency.

Smart control and flexible scheduling

With the Meross app or voice assistants, you can easily manage watering cycles, adjust settings, or activate manual watering when needed. The timer supports multiple programmable schedules, which continue to operate even without an internet connection, ensuring consistent irrigation.

Intelligent water management

The device includes a smart weather function that adapts watering schedules based on environmental conditions such as rain, frost, or wind. It also features adjustable automatic shut-off to prevent overwatering and reduce the risk of leaks. Built-in consumption monitoring allows you to track water usage and receive alerts if anomalies are detected.

Durable design for outdoor use

Constructed with a corrosion-resistant brass body and rated IP65, the MST100-EU is designed to withstand outdoor conditions. It is suitable for a wide range of applications, including sprinkler systems, drip irrigation, pools, gardens, and lawns.

Features of the MEROSS MST100-EU Timer

• Remote control via app, physical buttons, or voice commands
• Compatible with Apple HomeKit, Alexa, Google Home, and SmartThings
• Smart scheduling with offline operation support
• Weather-based automatic adjustments (rain, frost, wind)
• Adjustable automatic shut-off to prevent water waste
• Water consumption monitoring with anomaly alerts
• Robust brass construction with IP65 waterproof rating
• Suitable for various irrigation systems and outdoor uses

Technical Specifications - MEROSS MST100-EU

• Power supply: 4 × AA 1.5V alkaline batteries (not included)
• Dimensions: 97 × 50 × 167 mm
• Water pressure: 0.04–0.7 MPa (5–100 PSI)
• Operating temperature: 1°C to 60°C
• Protection rating: IP65
• Wireless communication: 433 MHz RF (hub required)
• Connectors: MHT input, FHT output (G3/4-14 EU standard)
• Certifications: CE, FCC, IC

Hub Compatibility

• Compatible with Meross MSH300 (up to 16 timers)
• Compatible with Meross MSH400 (up to 24 timers)

Package Contents

• 1x Watering timer
• 1x User manual
• 1x PTFE sealing tape