Shelly Shelly i4 Gen4 SKU 3800238070878 For turning up to four existing switches into scene buttons, with no relay in the box. The Shelly i4 Gen4 measures 37 x 42 x 15 mm and runs from 110-240 V. Manufacturer: Shelly £13.09 inc VAT Qty: − + Add to basket Key features Wi-Fi Bluetooth Zigbee Four inputs for existing switches or buttons Wi-Fi, Bluetooth and Zigbee connectivity Powered from 110 - 240 V~ Schedules, plus scripting, MQTT and webhooks Overheating protection Fits in a wall box behind the switch Set up and run from the Shelly Smart Control app Product details Manual Specifications Why Shelly i4 Gen4 The Shelly i4 Gen4 measures 37 x 42 x 15 mm and runs from 110-240 V Four inputs Turns four existing switches or buttons into triggers for scenes, lights or other devices. Connectivity Connects over Wi-Fi, Bluetooth and Zigbee. Setup runs from the phone, then the device joins the home network. Local automation Schedules, scripting, MQTT and webhooks run on the device itself, so routines keep working if the internet drops. Built-in protection Overheating protection cuts the output before the device or the load is put at risk. Hidden install Small enough to sit in the wall box behind an existing switch, so the room looks the same. Shelly Smart Control Add the device, name it and build scenes from the free app on iPhone or Android. What the Shelly i4 Gen4 doesThe Shelly i4 Gen4 is a four-input controller with no relay, for scenes and actions across other Shelly devices.Good for:Turning existing switches into scene buttonsControlling several relays from one switchMulti-click actionsKey factsPower supply: 110 - 240 V~ 50/60 HzMounting: Wall boxSize: 37x42x15 mm / 1.46x1.65x0.59 inchWorks withRuns from the Shelly Smart Control app and works with Amazon Alexa, Google Home and Home Assistant, with no hub needed. Connectivity: Wi-Fi, Bluetooth, Zigbee and Matter.Pairs well withShelly 1 Gen4: a relay for the circuits the inputs controlShelly 2PM Gen4: two channels to controlAlso considerShelly Plus i4: the Plus i4 input controllerBrowse Relays & dimmers, all Shelly and what Shelly is.Guide: Does Shelly work with Home Assistant in the UK?QuestionsDo I need a hub for the Shelly i4 Gen4?No. It connects to your home Wi-Fi directly.Should an electrician fit it?We recommend a qualified electrician for anything connected to mains wiring. The manual is linked on this page.Does it work with Home Assistant without the cloud?Yes. It works with Home Assistant on the local network. Shelly Smart Control One free app for every device This device is added and run from Shelly Smart Control, the free app for iPhone and Android. Rooms, groups and scenes for the whole home Live power readings on devices that measure energy Control away from home, or keep it on the local network Download on theApp Store Get it onGoogle Play iPhone needs iOS 15 or later. The app is published by Shelly. Related products Shelly 1 Gen4 3800238070687 £19.34 inc VAT Add to basket Shelly 2PM Gen4 3800238070748 £33.98 inc VAT Add to basket Shelly Plus i4 3800235265079 £12.44 inc VAT Add to basket
Four inputs Turns four existing switches or buttons into triggers for scenes, lights or other devices.
Connectivity Connects over Wi-Fi, Bluetooth and Zigbee. Setup runs from the phone, then the device joins the home network.
Local automation Schedules, scripting, MQTT and webhooks run on the device itself, so routines keep working if the internet drops.
Built-in protection Overheating protection cuts the output before the device or the load is put at risk.
Hidden install Small enough to sit in the wall box behind an existing switch, so the room looks the same.
Shelly Smart Control Add the device, name it and build scenes from the free app on iPhone or Android.