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🚀 Elevate your smart home game with instant, hub-free control!
The Shelly i4 Gen3 is a cutting-edge WiFi and Bluetooth-enabled smart controller that manages four digital inputs to automate and synchronize up to 16 actions. Designed for quick retrofit behind standard switches, it requires no hub and integrates seamlessly with Alexa, Google Home, and mobile apps, empowering professionals to effortlessly customize and control their smart environments remotely.


























| ASIN | B0D9JPDVN1 |
| Best Sellers Rank | #133,857 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #145 in Home Automation Hubs & Controllers |
| Brand | Shelly |
| Brand Name | Shelly |
| Color | Orange |
| Customer Reviews | 4.6 out of 5 stars 116 Reviews |
| Included Components | 1 x Shelly i4 Gen3, User Manual |
| Item Weight | 19 Grams |
| Manufacturer | Shelly Europe |
| Model | 3800235261828 |
| Part Number | 182 |
| Smart Home Compatibility | Smart Home Compatible |
| Unit Count | 1.0 Count |
| Voltage | 24 |
B**E
useful and reliable
I got this to connect a 110v beam-break sensor (Seco-Larm E-931-S35RRQ) in order to automate the lights (via Home Assistant and Z-Wave) when walking into our TV room with no windows. It has been essentially flawless and responds instantly and reliably. We do on rare occasion find the lights on unexpectedly in that room, but I have every reason to believe that is more an issue with our sensor installation than with the Shelly.
J**S
Smart Laser!
These are cool devices. I used them to monitor outputs from my laser cutter from home assistant. I just hooked each of the laser outputs to the inputs on this relay and can now monitor and track runtime, set up automation easily and basically just nerd-out on home assistant. Shelly offers a solid product!
N**.
Fast communication over local Wi-Fi is reliable.
This works great for detecting the change between "open" and "hot". But it doesn't work to detect the change between "on" and "off" when the off has a pull down. For example, connecting to a light bulb to try and sense when the light has 120v applied vs when it's off. Both the on and the off are connected to something and the device sees both the on and the off as connected - the light's filament is connected to neutral. So this triggers the device to see a connection. I solved this by adding a relay. Now the light bulb energize also powers a relay coil and the Shelly senses the relay closing. Works great.
J**0
Amazing, small and powerful
Easy to set up, has email capability, using it as a relay input to broadcast alarm. Does much more that just that. Recommend
J**S
Typical Shelly product
This is just like my other Shelly devices. It works. I use this connected to four switches to control a 3D printer chamber heater through Home Assistant.
T**S
Easy Home Assistant Integration for Automation
I used this for a project for Home Assistant to detect fire and smoke from this alarm. It works exactly as expected, super easy with the Shelley App
P**E
Great product. Easy to integrate and program
Great product. Easy to integrate and program
G**.
Exactly what it is
Great product for a very specific purpose, to trigger *other* Shelly relays, but device has no "dry contacts" of its own, just to be clear. Embedded in my wall of my garage, using momentary rocker switches, it makes for the perfect solution to trigger the Shelly relays that control my garage door openers.
J**O
No. Funciona.
No funcióna
J**I
Tutto ok!
Funziona benissimo!
R**O
Prima product
Uitstekend product, gebruikt voor de besturing van twee lampen in een hotelopstelling. De drie schakeluitgangen zijn geïntegreerd in Home Assistant voor logging doeleinden. Een product van hoge kwaliteit.
R**A
Fast
Top
A**S
Love the versatility of this product. If your Alexa dependant though please read the full review
Love the versatility of this product. Its not just seen on Alexa as an input as you can configure various 'scenes' and there are a lot of options however there is a Maximum amount under the free account of 3 scenes to trigger Alexa so to create an input option which latches on then off I had to use 2 of my 3 scenes up that said the premium upgrade is only around 35euros for the year which comes with lots of added extras.
Trustpilot
1 month ago
1 day ago