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SH1GEN4
Add remote multiprotocol connectivity to a light switch, wall outlet, or an electrical appliance with the Shelly 1 Gen 4 Dry Contact Smart Switch. This dry contact smart switch fits behind a wall switch or outlet to add Wi-Fi, Zigbee, Matter, or Bluetooth remote control over lights and connected devices. It features 1 switch/button input, 2 power supply inputs, and 1 potential-free contacts relay input. It's compatible with various load types, such as resistive loads (incandescent bulbs and heating devices), capacitive loads (capacitor banks, electronic equipment, and motor start capacitors), and inductive loads (LED light drivers, transformers, fans, refrigerators, and air conditioners).
The Shelly 1 Gen 4 operates without the need for a smart hub and can be easily controlled via the Shelly Smart Control app (for iOS and Android). It is also compatible with voice assistants like Amazon Alexa, Google Assistant, and Siri. Once integrated, you can create automation scenes, set schedules, and trigger local actions. For example, by installing a Shelly 1 Gen 4 in both your bedroom and kitchen, you can have the lights in those rooms automatically turn on at a specific time each morning, allowing you to wake up without the need to stumble around trying to find the light switch.

Shelly Smart Control App – Everything at Home Connected
Enjoy enhanced home automation control and precise monitoring of your Shelly devices no matter where you are with the Shelly Smart Control app. The app connects to Shelly's cloud service to help you control your connected devices remotely and send notifications for all automated events in your home directly to your smart device. You can easily configure devices and manage their settings individually, or you can create personalized scenes by combining Shelly devices to trigger certain actions in your home automation. The Shelly Smart Control App supports real-time power metering with power management (PM) devices, smart plugs, and smart bulbs in order to allow you to build complex automation solutions for improved energy efficiency and lower electricity bills.
NOTE: Requires connection to a Wi-Fi network.
Shelly creates innovative and affordable smart home devices for residential and business applications. Shelly, formerly Qubino, now focuses on providing Wi-Fi and Z-Wave compatible smart home solutions. Shelly devices are among the smallest automation control devices in the world, allowing them to find their place in nearly any sized smart home installation. Shelly utilizes the latest technologies to deliver superior automation, safety, and energy efficiency to their customers without breaking down their walls or bank accounts.