Zemismart MT25B | Wireless Roller Blind Motor (Retrofit) | Matter over Thread

Zemismart MT25B Roller Blind Motor | Matter about Thread | 2600mAh | Retrofit

The Zemismart MT25B is a smart tubular motor that allows you to convert your existing roller blinds into smart blinds without any renovations. With Matter over Thread support, this motor works seamlessly with Apple HomeKit, Google Home, Samsung SmartThings, and other Matter-certified systems. The built-in 2600mAh battery lasts 3 to 6 months on a full charge. Perfect for Roller Shades, Zebra Blinds, and Shangri-La Shades with a tube diameter of 37-38mm. Includes a 3-meter USB-C cable, wall brackets, and end cap – only the remote control needs to be ordered separately.

Note: A Thread Border Router (such as a HomePod mini, Apple TV 4K, Home Assistant with Thread, Google Nest Hub, or Samsung SmartThings Hub) is required for the motor to work with Matter systems. A remote control is also required to set the upper and lower limits before the motor can be connected to your smart home system. The remote control is not included and must be ordered separately.

Key Features

Matter over Thread for universal compatibility
The MT25B uses Matter over Thread for a direct connection to your smart home, without an additional hub or gateway. It works with Apple HomeKit, Google Home, Samsung SmartThings, Amazon Alexa, and all other Matter-certified platforms. Thread provides fast response, local control, and a reliable connection.

Rechargeable 2600mAh battery
The built-in battery lasts an average of 3 to 6 months with twice-daily use, depending on the width and weight of your roller blind. Charging is easy with the included 3-meter USB-C cable. A solar panel (495 x 60 mm) is available as an option, so you'll rarely, if ever, need to charge.

Retrofit solution without renovation
Suitable for roller blind tubes with a diameter of 37-38mm. Slide the motor into the tube, install the wall brackets, and you're done. No electrician needed, no electrical outlet required. Ideal for rental properties or situations where there's no power supply near the window.

Three adjustable speeds
The MT25B offers three speed settings: 20, 25, and 30 RPM. Choose a lower speed for quiet operation in bedrooms or a higher speed for wide, heavy curtains. You can adjust the speed using the remote control .

Powerful yet compact
With 1.1 Nm of torque and a maximum load capacity of 4 kg, the MT25B is suitable for most roller blinds, zebra blinds, and Shangri-La shades. Its compact design fits standard 37-38mm tubes without modification.

Technical specifications

• Model number: Zemismart MT25B
• Connectivity: Matter over Thread (requires Thread Border Router)
• Compatible with: Apple HomeKit, Google Home, Samsung SmartThings, Amazon Alexa, all Matter-certified systems
• Tube diameter: 37-38mm
• Battery: 2600mAh rechargeable, 3-6 months under normal use
• Charging: USB-C, 5V/2A (3 meter cable included)
• Power: 9.6W (nominal)
• Current: 0.8A (nominal)
• Speed: 30 RPM
• Torque: 1.1 Nm
• Maximum load capacity: 4 kg
• Suitable for: Roller Shade, Zebra Blind, Shangri-La Shade
• Remote control : Required for limit settings (not included, sold separately)
• Wall bracket dimensions: 76.5 x 57 mm (H x W)
• End cap diameter: 40 mm
• Matter version: 1.1
• Firmware version: 1.0.0
• Hardware version: 1.0.0
• Certification ID: CSA23D28MAT41837-24

Package contents

• Zemismart MT25B tubular motor with built-in 2600mAh battery
• USB-C charging cable (3 meters)
• End cap (40mm diameter)
• Set of wall brackets (76.5 x 57 mm)
• Mounting material (screws and plugs)
• Matter QR Code Manual

Not included: Remote control (required for limit settings, sold separately)

Practical applications

Wake-up routine with natural light
Have your roller blinds open automatically at sunrise or at a set time. Perfect for waking up naturally without an alarm clock. Combine with light and temperature automations for the perfect morning routine.

Privacy automation
Automatically close your curtains at sunset or when you arrive home. Pair with presence detection for added convenience and privacy. Ideal for living rooms with large windows or ground-floor bedrooms.

Temperature control and energy saving
Open curtains on sunny winter days for natural heating, close them in summer to keep the heat out. Combine with temperature sensors for smart climate control and save on energy costs.

Vacation mode and burglary prevention
Simulate presence by opening and closing curtains at random times while you're on vacation. Added security without any additional equipment.

Voice control for added convenience
"Hey Siri, open the living room curtains" or "OK ​​Google, close all the curtains." Control your roller blinds with your voice via Apple Siri, Google Assistant, or Amazon Alexa.

Installation and use

Step 1: Preparation

1. Remove your existing roller blind from the wall
2. Remove the tube from the brackets and remove the pull cord mechanism
3. Measure the inside diameter of the tube (should be 37-38mm)

Step 2: Installing the engine

1. Slide the Zemismart MT25B motor into the roller blind tube (note the correct direction)
2. Place the supplied end cap on the other side of the tube
3. Attach the supplied wall brackets to the desired position
4. Hang the roller blind tube with motor back into the brackets

Step 3: Set limits with remote control (MANDATORY)

1. Make sure you have a compatible remote control (sold separately)
2. Pair the remote control with the motor according to the instructions
3. Set the upper and lower limits via the remote control
4. Important: Without set limits, the engine cannot be paired with Matter systems

Step 4: Connect to Matter system

1. Make sure you have a Thread Border Router (HomePod mini, Apple TV 4K, Google Nest Hub, etc.)
2. Open the Home app (HomeKit), Google Home app, or SmartThings app
3. Scan the Matter QR code on the engine or in the manual
4. Follow the instructions in the app to add the engine
5. Test the operation via the app and vote

Please note: Once paired to your Matter system, the remote will continue to work for manual control.

Thread Border Router required

To make the Zemismart MT25B work with Matter systems, you need a Thread Border Router . This device connects the Thread network to your Wi-Fi network and enables communication between the motor and your smart home system.

Compatible Thread Border Routers:

• Apple: HomePod mini, HomePod (2nd gen), Apple TV 4K (2021 or later)
  
• Aqara: Hub M3 , Smart Hub M100 , Camera Hub G5 Pro , Doorbell Camera Hub G410
• Home Assistant: Diyani Smart Dongle 1P , Sonoff Dongle E
• Google: Google Nest Hub (2nd gen), Google Nest Hub Max, Nest WiFi Pro
• Samsung: SmartThings Hub v3, SmartThings Station
• Amazon: Echo (4th Gen) , Echo Show 10 (3rd Gen)
• Other: Homey Pro (2023) , various Thread-compatible routers and hubs

Before purchasing, check whether your smart home system has a Thread Border Router, or plan to purchase one.

Optionally available: Solar panel

For those who never want to recharge, an optional solar panel is available (dimensions: 495 x 60 mm). The solar panel connects to the motor's USB-C port and provides a continuous power supply via sunlight. Ideal for bright windows or hard-to-reach locations.

Advantages of the solar panel:

• Never charge manually again
• Continuous power supply with sufficient sunlight
• Environmentally friendly and energy efficient
• Easy installation (plug and play via USB-C)

Plus points

• Matter over Thread for universal compatibility with all major smart home platforms
• Rechargeable 2600mAh battery lasts 3-6 months
• Retrofit solution without electrical outlet or electrician required
  
• Powerful: up to 4 kg load capacity, suitable for most roller blinds
• Complete set with USB-C cable (2m), wall brackets and end cap
• Local control via Thread for fast response and privacy
• Remote control continues to work after pairing to Matter system
• Optional solar panel available for continuous power supply
• Suitable for Roller Shade, Zebra Blind and Shangri-La Shade

Negative points

• Thread Border Router required (not included)
• Remote control required for limit settings but not included (sold separately)
• Only suitable for tubes with a diameter of 37-38 mm
• Maximum load capacity 4 kg, not suitable for very large/heavy curtains
• Battery life varies significantly depending on curtain weight and frequency of use
  

Frequently Asked Questions

Does the Zemismart MT25B work with HomeKit, Google Home, and SmartThings?

Yes, the MT25B works with all Matter-certified systems, including Apple HomeKit, Google Home, Samsung SmartThings, and Amazon Alexa. You will need a Thread Border Router (such as a HomePod mini, Apple TV 4K, Google Nest Hub, or SmartThings Hub).

Why is a remote control mandatory?

Before you can connect the motor to your Matter system, the upper and lower limits must be set. This can only be done via a remote control, not the app. Without set limits, the motor will not function. The remote control is not included and must be ordered separately.

Do I need a Thread Border Router?

Yes, a Thread Border Router is required for the MT25B to work with Matter systems. This device connects the Thread network to your Wi-Fi network. Devices like HomePod mini, Apple TV 4K (2021+), Google Nest Hub (2nd gen), and SmartThings Hub have a built-in Thread Border Router.

How long does the battery last?

The 2600mAh battery lasts an average of 3 to 6 months when used twice a day. This depends on the width and weight of your roller blind and the selected speed. Heavier blinds consume more power. Charging takes a few hours using the included USB-C cable.

Does this motor fit my roller blind?

The MT25B is suitable for roller blind tubes with an internal diameter of 37-38mm. Measure the internal diameter of your tube before purchasing. For smaller tubes (20-25-28mm), the Zemismart MT15B is available.

Can I control multiple engines at the same time?

Yes, with Matter systems, you can group multiple MT25B motors together and control them simultaneously. For example: "Hey Siri, open all the living room curtains." You can also create scenes that open or close multiple curtains simultaneously.

Will the remote continue to work after pairing it to Matter?

Yes, the remote control will continue to work, even after the motor is paired with your Matter system. This is useful as a backup or for guests who don't have access to your smart home system.

Is the solar panel worth it?

If your window gets a lot of direct sunlight and you never want to recharge, a solar panel is an excellent investment. It provides a continuous power supply without having to remove the motor for charging. This is especially useful for hard-to-reach windows or high-up installations.

Can I adjust the speed?

Yes, the MT25B has three speed settings: 20, 25, and 30 RPM. You adjust the speed using the remote control. Lower speeds are quieter, while higher speeds are faster but slightly noisier.

What if I don't have a Thread Border Router?

Without a Thread Border Router, you can't connect the MT25B to Matter systems. You can manually control the motor via the remote, but all smart home features (app control, voice, automations) will be unavailable.

Is installation difficult?

No, installation is relatively simple and doesn't require an electrician. You simply slide the motor into the tube, attach the brackets, and set the limits using the remote control . Most people can do this themselves in 30-60 minutes. Watch the installation video on YouTube for a step-by-step explanation.

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