Shelly Plus Add-on User and Safety Guide

Product Introduction

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

Legend

Device terminals:

• VCC: Sensor power supply terminals
• DATA: 1-Wire data terminals
• GND: Ground terminals
• ANALOG IN: Analog input
• DIGITAL IN: Digital input
• VREF OUT: Reference voltage output
• VREF+R1 OUT: Reference voltage through a pull-up resistor* output

External sensor pins:

• VCC/VDD: Sensor power supply pins
• DATA/DQ: Sensor data pins
• GND: Ground pins

* For passive devices that need it to form a voltage divider.

Installation Instructions

⚠ CAUTION! Danger of electrocution. Mounting/installation of the Device to the power grid has to be performed with caution, by a qualified electrician.

⚠ CAUTION! Danger of electrocution. Every change in the connections has to be done after ensuring there is no voltage present at the Device terminals.

⚠ CAUTION! Use the Device only with a power grid and appliances which comply with all applicable regulations. A short circuit in the power grid or any appliance connected to the Device may damage the Device.

⚠ CAUTION! Do not connect the Device to appliances exceeding the given max load!

⚠ CAUTION! Connect the Device only in the way shown in these instructions. Any other method could cause damage and/or injury.

⚠ CAUTION! Do not install the Device where it can get wet.

If you are installing the Shelly Plus Add-on to a Shelly Plus device that is already connected to the power grid, check that the breakers are turned off and there is no voltage on the terminals of the Shelly Plus device you are attaching the Shelly Plus Add-on to. This can be done with a phase tester or multimeter. When you are sure that there is no voltage, you can proceed to installing the Shelly Plus Add-on.

Attach the Shelly Plus Add-on to the Shelly Plus device as shown on Fig. 3.

⚠ CAUTION! Be very careful not to bend the Device header pins (C) when inserting them to the Shelly Plus device header connector (D).

Make sure the brackets (A) lock on the Shelly Plus device hooks (B) and then proceed to the Device wiring.

Connect one digital humidity and temperature sensor DHT22 as shown on Fig. 1 A or up to 5 digital temperature sensors DS18B20 as shown on Fig. 1 B.

⚠ CAUTION! Do not connect more than one DHT22 sensor or a combination of DHT22 and DS18B20 sensors.

Connect a 10 kΩ potentiometer as shown on Fig. 2 A for smooth analog readings or a thermistor with 10 kΩ nominal resistance and β=4000 K as shown on Fig. 2 B for analog temperature measurement.

You can also measure the voltage of an external source within the 0 to 10 V⎓ range. The voltage source internal resistance should be less than 10 kΩ for optimal performance.

The Device also provides interface to an auxiliary digital signal through its digital input. Connect a switch/button, a relay or an electronic device as shown on Fig. 2.

If the Shelly Plus device, which the Shelly Plus Add-on is attached to, has not been connected to the power grid, install it following its user and safety guide.

Specifications

• Mounting: Attached to a Shelly Plus device
• Dimensions (HxWxD): 37x42x15 mm
• Working temperature: -20°C to 40°C
• Max. altitude: 2000 m
• Power supply: 3.3 V⎓ (from Shelly plus device)
• Electrical consumption: < 0.5 W (without sensors)
• Analog input range: 0 - 10 V⎓
• Analog input report threshold: 0.1 V⎓ *
• Analog input sampling rate: 1 Hz
• Analog measurement accuracy: better than 5%
• Digital input levels: -15 V to 0.5 V (True) / 2.5 V to 15 V (False) **
• Screw terminals max. torque: 0.1 Nm
• Wire cross section: max. 1 mm²
• Wire strip length: 4.5 mm

*Can be configured in the analog input settings

**Logic can be inverted in the digital input settings

Declaration of conformity

Hereby, Shelly Europe Ltd. declares that the equipment type Shelly Plus Add-on is in compliance with Directive 2014/30/EU, 2014/35/EU, 2011/65/EU. The full text of the EU declaration of conformity is available at the following internet address: https://shelly.link/Plus-Addon_DoC

Disposal and recycling

Do not dispose of the product in household waste. Recycle the product to prevent environmental and health damage and to promote resource conservation. Dispose of the product at an appropriate waste collection point at your own responsibility.

Resellers, from whom the Device was purchased, are required to accept Waste Electrical and Electronic Equipment (WEEE) free of charge for proper disposal.

Some electronic products may store personal data. The user is responsible for deleting this data before disposing of the Device. To delete it, reset the Device to its factory settings.

Manufacturer Information

• Manufacturer: Shelly Europe Ltd.
• Address: 51 Cherni Vrah Blvd., bldg. 3, fl. 2-3, 1407 Sofia, Bulgaria
• Tel.: +359 2 988 7435
• E-mail: support@shelly.cloud
• Web: https://www.shelly.com

Changes in the contact data are published by the Manufacturer at the official website. https://www.shelly.com

All rights to trademark Shelly® and other intellectual rights associated with this Device belong to Shelly Europe Ltd.

Diagrams

Fig. 1 A: Connection of one DHT22 digital humidity and temperature sensor.

Fig. 1 B: Connection of up to 5 DS18B20 digital temperature sensors.

Fig. 2 A: Connection of a 10 kΩ potentiometer for analog readings.

Fig. 2 B: Connection of a thermistor with 10 kΩ nominal resistance and β=4000 K for analog temperature measurement.

Fig. 2: Connection of a switch/button, a relay, or an electronic device to the digital input.

Fig. 3: Attaching the Shelly Plus Add-on to the Shelly Plus device.