Shelly Plus Uni

Main applications

• Residential

• MDU (Multi Dwelling Units – apartments, condominiums, hotels, etc.)

• Light commercial (small office buildings, small retail/restaurant/gas station, etc.)

• Government/municipal

• University/college

Integrations

• Google

• Samsung SmartThings

• Alexa

Simplified internal schematics

 

 

 

 

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

Addon interface

• Shelly proprietary serial interface

 

 

 

 

Connectivity

• Wi-Fi

• Bluetooth (for inclusion purposes)

Safety features

• PCB coating film

User interface

Inputs

• One (Reset) button

  • Press and hold for 5 seconds to enable Device access point and Bluetooth connection.

  • Press and hold for 10 seconds to factory reset the Device.

Outputs

• LED (monocolor) indication

  • AP (Access Point) enabled and Wi-Fi disabled:
    1 second ON / 1 second OFF

  • Wi-Fi enabled, but not connected to a Wi-Fi network:
    1 second ON / 3 seconds OFF

  • Connected to a Wi-Fi network:
    Constantly ON

  • Cloud is enabled, but not connected:
    1 second ON /5 seconds OFF

  • Connected to Shelly Cloud:
    Constantly ON

  • OTA (Over the Air Update):
    ½ sec ON / ½ second OFF

  • Button pressed and held for 5 seconds:
    ½ second ON / ½ second OFF

  • Button pressed and held for 10 seconds:
    ¼ second ON / ¼ second OFF

The list above starts with the initial device status and the lowest priority. Every next state cancels the previous one.

Specifications

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Type	Value
Physical
PCB size (LxWxH):	40x21x7 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 % to 70 % RH
Electrical
Power supply:	8-24 VAC 9-28 VDC 5 VDC (stabilized, via +5 VDC and GND)
Power consumption:	< 1 W
Input circuits ratings
Digital inputs resistance:	50 kΩ
Digital inputs triggering voltage:	1.5 V (active low level)
Output circuits 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 and 50 m / 160 ft outdoors (Depends on local conditions)
Bluetooth Protocol:	4.2
Bluetooth Range:	Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors (Depends on local 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

 

 

 

 

 

Basic wiring diagram

 

 

NOTICE! Shelly Plus Uni inputs are different from the previous Shelly Uni ones.

 

 

 

 

 

 

Legend

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VAC1	Red	8-24 VAC / 9-28 VDC power supply input 1
VAC2	Black	8-24 VAC / 9-28 VDC power supply input 2
ANALOG IN	White	Analog input
SENSOR VCC	Yellow	Power supply for 1-Wire sensors
DATA	Blue	1-Wire data line
+ 5 VDC	Gray	5 VDC power supply positive input
GND	Green	5 VDC power supply ground input and Sensor ground
COUNT IN	Purple	Counter input
IN1	Orange	Digital input 1
IN2	Brown	Digital input 2
OUT 1	Black	Solid-state relay 1 terminals
OUT 2	Black	Solid-state relay 2 terminals