How to make a LiftMaster SW420 smart?

The LiftMaster SW420 is a reliable and popular garage door opener known for its exceptional performance and durability. Manufactured by LiftMaster, a trusted brand in the industry, the SW420 is designed to provide smooth and efficient operation for your garage door.
With its advanced features and user-friendly interface, the LiftMaster SW420 has gained a reputation for being one of the top choices among customers. Its robust construction ensures long-lasting performance, while its quiet operation ensures minimal noise disturbance.
Now, you can take your LiftMaster SW420 to the next level of convenience and functionality by making it smart with the ismartgate. By purchasing an ismartgate, you can easily transform your existing garage door opener into a smart device.
The ismartgate offers a range of smart features that allow you to control and monitor your garage door from anywhere using your smartphone. Whether you're at home, at work, or on the go, you can open, close, and check the status of your garage door with just a few taps on your phone.
Additionally, the ismartgate integrates seamlessly with popular smart home platforms, such as Amazon Alexa and Google Assistant, enabling you to control your garage door using voice commands. It also provides real-time notifications, alerting you whenever your garage door is opened or closed.
With the ismartgate, you can enhance the security and convenience of your LiftMaster SW420, making it a smart investment for your home. Upgrade your garage door opener today and experience the benefits of a smart garage door.

Make your existing garage or gate opener smart

What can ismartgate garage door opener do?

Discover the amazing advantages of the ismartgate garage door opener:
- Control your garage door remotely using your smartphone.
- Receive real-time notifications when your garage door opens or closes.
- Grant access to family members, friends, or delivery services with temporary or permanent virtual keys.
- Integrate with popular voice assistants like Amazon Alexa or Google Assistant for hands-free control.
- Monitor garage door activity history to keep track of who accessed your garage and when.
- Automatically close your garage door after a specified period of time to ensure security.
- Integrate with other smart home devices, such as security cameras or smart locks, to enhance your home's security system.
- Enjoy seamless compatibility with popular smart home platforms like Apple HomeKit, SmartThings, or IFTTT.

How do I install an ismartgate smart garage opener to a LiftMaster SW420?

1. Get your ismartgate device here.
2. Take a look at the LiftMaster SW420 wiring diagram below.
3. Using a small cross head screw driver, connect the wires (included with the ismartgate Kit).
4. To power the ismartgate device, you can use the included wall mount AC adapter. In case don't have a power outlet you can use our DC/DC Power Converter.

Wiring, connections diagram for iSmartgate Lite, Mini, Pro - Smart Garage Door & Gate Openers

LiftMaster SW420 wiring diagram.

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Doors Supported	1	1	3
Remote Access & Door Status Alerts
Apple HomeKit
Google Assistant
Samsung SmartThings
IFTTT
Amazon Alexa*
Wireless Sensor Compatibility
Wired Sensor Compatibility
User Management
Video Integration
Visual Acoustic Alarm
Open & Close Custom Music
Wi-Fi compatibility (2.4GHz)
Ethernet Compatibility**
Web Browser Access

Which ismartgate do I need?

Which iSmartgate garage door opener do I need?

Which ismartgate do I need?

Try our simulator and find the perfect ismartgate for your home.

How many Garage Doors do you have?

DOOR 1 TYPE:

Sectional

DOOR 2 TYPE:

Sectional

DOOR 3 TYPE:

Sectional

Sensor type

Do you want wireless or wired sensor/s for your garage door/s?

Is your opener Chamberlain, Liftmaster or Craftsman?

ismartgate garage door simulator, security

Got a Chamberlain or LiftMaster Garage Door Opener with Security+2.0?

Check the color of the learn button on your garage opener. If it’s YELLOW your opener use Security+2.0 and you will need the ismartgate switch adaptor.

Door 1

Door 2

Door 3

Separation