Device identification

  • Device name: Shelly Plus Add-on

Short description

Shelly Plus Add-on (the Device) is a galvanically isolated sensor interface to the Shelly Plus devices.

Main applications

  • Residential

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

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

  • Agricultural (greenhouses, hotbed, nurseries, ranches, etc. )

  • Government/municipal

  • University/college

Future integrations

  • Google

  • Amazon

  • Samsung SmartThings

Device electrical interfaces

Inputs

  • 1 analog input: ANALOG IN

  • 1 digital input: DIGITAL IN

Output

  • 1 reference voltage output: VREF OUT

  • 1 reference voltage through a pull-up resistor output: VREF + R1 OUT

  • 2 ground terminals: GND*

1-Wire interface

  • 3 sensor power supply outputs (connected to the same PCB track): VCC

  • 3 sensor data terminals (connected to the same PCB track): DATA

  • 3 ground terminals: GND*

* Connected to the same PCB ground layer.

Addon interface

  • Shelly proprietary serial interface to connect to a Shelly Plus device

Supported sensors

  • Up to 5 DS18B20

  • Single DHT22

  • NTC resistors with 10 kΩ nominal resistance and β=4000 K

  • Photoresistors

  • PIR sensors

  • Soil moisture sensors

  • Ultrasonic proximity sensors

  • Capacitive liquid level sensors

  • Sound detectors

  • Other analog sensors with 0 to 10 V output voltage

Specifications

Type

Value

Physical

Size (HxWxD):

37x42x15 ±0.5 mm / 1.46 x 1.65 x 0.59 ±0.02 in

Weigh:

105 g / 3.70 oz

Shell material:

Plastic

Color:

Black

Environmental

Ambient temperature:

-20 °C to 40 °C / -5 °F to 105 °F

Humidity

30 % to 70 % RH

Max. altitude

2000 m / 6562 ft

Electrical

Power supply voltage AC:

N/A

Power supply voltage DC:

3.3 V (from Shelly plus device)

Power consumption:

< 0.5 W (without sensors)

Output circuits ratings

VCC max. current:

10 mA

VREF OUT max. current:

1 mA

Shelly Plus device firmware capabilities

Shelly Plus Addon supporting devices:

  • Shelly Plus 1/1PM

  • Shelly Plus 2PM

  • Shelly Plus i4/i4DC

Temperature reading:

Depends on the DS18B20 or DHT22 sensors

Humidity reading:

Depends on the DHT22 sensor

Digital input:

-15 V to 0.5 V (True) / 2.5 V to 15 V (False)*

Analog input range:

0 to 100%

Analog input report threshold:

1%**

Voltmeter range:

0 to 10 V

Voltmeter report threshold:

0.1 V**

Analog input / Voltmeter accuracy

Better that 5%

* Logic can be inverted in the digital input settings
** Can be configured in the analog input / voltmeter settings

Basic wiring diagrams

Shelly Plus Add-on 1-Wire wiring diagrams

Shelly Plus Add-on 1-Wire sensors wiring diagrams

Shelly Plus Add-on analog input wiring diagrams

Shelly Plus Add-on analog input wiring diagrams

Troubleshooting

...

Components and APIs

Printed user manual

Printed user guide - English, Deutsch, Italiano, Español, Português, Français

Compliance

Installation guides