5-24V DC. The Shelly Plus i4 DC supports low-voltage DC systems. It is suitable for a variety of applications and can be wired to alarm systems, doorbells, and garage doors, keeping you informed about their status at all times.

The Shelly Plus i4 DC allows you to manually activate or deactivate any created scene, perform synchronized actions, or initiate complex triggering scenarios. It is equipped with an extremely fast processor that immediately triggers the execution and notification of various actions. You can use the Shelly Plus i4 DC to control other connected Shelly relays, sensors, or HTTP and MQTT-controlled devices.

The Shelly Plus i4 DC is small enough to fit behind any wall switch and can display the status of four inputs and control their actions. Install it where it is most convenient for you and use it to activate different scenes or actions of other Shelly devices in your home with just the press of a button.

The Shelly Plus i4 DC supports up to three different actions per button, allowing for quick manual control of a group of devices. One of the most frustrating things is realizing you've forgotten to turn off the living room light before going to bed, especially when your smartphone is nowhere to be found. But there's no need to worry! The Shelly Plus i4 DC enables manual control of other Shelly devices. Now, full control of your home is just a button press away!

Manually activate or deactivate complex scenes. With the Shelly Plus i4 DC, you can perform synchronized actions from multiple Shelly devices. You can install it near your front door and control all the lights in your house with a single button press.