Shelly Plus Uni

Device identification

Name: Shelly Plus Uni

Model: SNSN-0043X

Device SSID: ShellyPlusUni-XXXXXX

Short description

Shelly Plus Uni is a compact, smart universal module designed for remote control, monitoring, and automation of electrical devices.
It features two solid-state relays with potential-free contacts, a pulse counter, analog input, and two digital inputs, allowing flexible integration
into various applications. The device can operate locally on a Wi-Fi network or be managed via cloud-based automation services, offering seamless
control from anywhere through the Shelly app or web interface.

Main features

• Universal smart module for versatile control and monitoring
• Two potential-free solid-state relay outputs
• Analog input, pulse counter, and two digital inputs
• Supports AC/DC power supply (dual mode)
• 1-Wire data input for temperature sensors
• Wi-Fi connectivity with cloud or local operation
• Bluetooth for quick inclusion and setup
• Built-in web interface for configuration and control
• Compact design suitable for embedding into electrical systems
• PCB coating film for enhanced durability and insulation

Main applications

• Residential
• MDU (apartments, condominiums, hotels, etc.)
• Light commercial (offices, retail, restaurants, gas stations)
• Government / municipal buildings
• University / college facilities

Integrations

Google Home: Supported

Amazon Alexa: Supported

Samsung SmartThings: Supported

Device electrical interfaces

Power supply:

• AC/DC power supply – VAC1 and VAC2

• DC power supply – +5 VDC and GND

Inputs:

• 1 analog input – ANALOG IN

• 1 1-Wire data input – DATA

• 1 pulse counter input – COUNT IN

• 2 digital inputs – IN1 and IN2

Outputs:

• 1 sensors power supply output – SENSOR VCC

• 2 potential-free contacts solid-state relay outputs – OUT1 and OUT2

Add-on interface:

Shelly proprietary serial interface

Connectivity

Wi-Fi

Bluetooth (for inclusion purposes)

Safety features

PCB coating film for protection and extended lifespan.

User interface

Inputs:

• One Reset button

Press and hold for 5 seconds – Enable Access Point and Bluetooth mode.

Press and hold for 10 seconds – Factory reset the device.

Outputs:

LED (monocolor) indication

• AP enabled & Wi-Fi disabled: 1 s ON / 1 s OFF

• Wi-Fi enabled, not connected: 1 s ON / 3 s OFF

• Connected to Wi-Fi: Constant ON

• Cloud enabled, not connected: 1 s ON / 5 s OFF

• Connected to Shelly Cloud: Constant 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

The LED indication follows a priority sequence – each new state overrides the previous one.

Physical

PCB size (LxWxH): 40×21×7 mm / 1.57×0.83×0.28 in

Weight: 8.5 g / 0.3 oz (with the cables)

Environmental

Ambient temperature: −20 °C to 40 °C (−5 °F to 105 °F)

Humidity: 30–70% RH

Electrical

Power supply: 8–24 V~ / 9–28 V⎓ / 5 V⎓ (stabilized, via +5 VDC and GND)

Power consumption: < 1 W

Input ratings

Digital inputs resistance: 50 kΩ

Digital inputs triggering voltage: 1.5 V (active low level)

Output ratings

Max switching voltage: 30 V

Max switching current: 300 mA

Sensors & Meters

Voltmeter: 0–15 VDC / 0–30 VDC (two-range)

Voltmeter accuracy: —

Pulse counter input triggering voltage: 1.5 V (active low level)

Pulse counter max frequency: 1 kHz

External sensors supported: Single DHT22 or up to five DS18B20

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

Schedules: 20

Webhooks (URL actions): 20 with 5 URLs per hook

Scripting: Yes

MQTT: Yes

CoAP: No