Shelly
Shelly Plus i4 UL
Shelly Plus i4 UL
Low stock
A Wi-Fi smart controller with 4 digital inputs, letting you manually trigger scenes, run synchronized actions, or set up advanced automation routines.
Key features
- Extremely fast processor (ESP32, improved API interface)
- Multi-click support — up to 16 possible actions
- JavaScript support for customized and complex automation scenarios
- Designed to fit in most standard electrical boxes and switches
- Easy control through the Shelly app, various protocols, platforms, and voice assistants
- Embedded web server; connects directly to your Wi-Fi network
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Technical details
Technical details
Device identification
Device name: Shelly Plus i4
Device model: SNSN-0024X
Device SSID: ShellyPlusI4-XXXXXX
Short description
Shelly Plus i4 is a compact smart Wi-Fi input module that enables control of scenes, synchronized actions, or complex automations through up to four switch inputs.
It allows users to trigger multiple devices or routines without output relays, making it ideal for multi-scene or multi-device control.
Small enough to fit behind any wall switch, the device offers full remote management, scene activation, and real-time monitoring through Wi-Fi.
Main applications
- Residential
- MDU (Multi Dwelling Units – apartments, condominiums, hotels, etc.)
- Light commercial (offices, retail stores, restaurants, gas stations, etc.)
- Government/municipal facilities
- Universities and educational institutions
Integrations
Alexa (via virtual device routines)
Device electrical interfaces
Inputs: 4 switch/button inputs on screw terminals (SW1, SW2, SW3, SW4); 3 power supply inputs (1 N and 2 L)
Outputs: N/A
Add-on interface: Shelly proprietary serial interface
⚠CAUTION! High voltage on the add-on interface when the Device is powered!
Connectivity
Wi-Fi
Bluetooth
Safety features
Overheating protection
User interface
Inputs:
• One (Reset) button
– Hold for 5 seconds to enable Device access point and Bluetooth connection
– Hold for 10 seconds to factory reset the Device
Outputs:
• LED (monocolor) indication
– AP (Access Point) enabled and Wi-Fi disabled: 1 s ON / 1 s OFF
– Wi-Fi enabled, not connected: 1 s ON / 3 s OFF
– Connected to Wi-Fi: Constantly ON
– Cloud enabled but not connected: 1 s ON / 5 s OFF
– Connected to Shelly Cloud: Constantly ON
– OTA update: ½ s ON / ½ s OFF
– Button held 5 s: ½ s ON / ½ s OFF
– Button held 10 s: ¼ s ON / ¼ s OFF
(Each higher-priority state cancels the previous one)
Specifications
Specifications
Physical
Size (HxWxD): 37×42×16 ±0.5 mm / 1.46×1.65×0.63 ±0.02 in
Weight: 18 g / 0.63 oz
Mounting: Wall box
Screw terminals torque: 0.4 Nm (3.5 lbf·in)
Conductor size: 0.5–1.5 mm² (20–16 AWG)
Strip length: 5–6 mm (0.20–0.24 in)
Shell material: Plastic
Color: Orange
Environmental
Ambient temperature: −20 °C to 40 °C (−5 °F to 105 °F)
Humidity: 30–70% RH
Max altitude: 2000 m (6562 ft)
Electrical
Power supply: 110–240 V~ 50/60 Hz
Power consumption: < 1 W
Sensors & Meters
Internal temperature sensor: Yes
Radio
RF band: 2400–2495 MHz
Max RF power: < 20 dBm
Wi-Fi protocol: 802.11 b/g/n
Wi-Fi range: Up to 30 m / 100 ft indoors; 50 m / 160 ft outdoors (depends on conditions)
Bluetooth protocol: 4.2
Bluetooth range: Up to 10 m / 33 ft indoors; 30 m / 100 ft outdoors (depends on conditions)
MCU
CPU: ESP32-U4WDH
Flash: 4 MB
Firmware capabilities
Webhooks (URL actions): 20 with 5 URLs per hook
Scripting: Yes
MQTT: Yes
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