Shelly Uni Universal Wi-Fi Sensor Input and Safety Guide

Brand: Shelly

Device Diagram Description

The diagram illustrates the Shelly Uni device terminals. It shows connections for power supply (0-12/0-30 VDC, L+, N-), an analog input, sensor VCC, data line, and ground (GND). It also features two binary inputs (IN 1, IN 2) and two potential-free MOSFET relay outputs (OUT 1, OUT 2). The device is compatible with DHT22 and DS18B20 sensors. A reset button and an LED indicator are also visible.

Legend

  • L: Power supply live (AC) / positive (DC) input
  • N: Power supply neutral (AC) / negative (DC) input
  • ANALOG IN: Analog input
  • SENSOR VCC: Sensor power supply output
  • DATA: 1-Wire data line
  • GND: Ground ?
  • IN 1: Binary input 1
  • IN 2: Binary input 2
  • OUT 1: Potential-free MOSFET relay output 1
  • OUT 2: Potential-free MOSFET relay output 2

Read Before Use

This document contains important technical and safety information about the device, its safe use, and installation.

⚠️ ATTENTION! Before beginning the installation, please read this guide and any other documents accompanying the device carefully and completely. Failure to follow the installation procedures could lead to malfunction, danger to your health and life, violation of the law, or refusal of legal and/or commercial guarantee (if any). Shelly Europe Ltd. is not responsible for any loss or damage in case of incorrect installation or improper operation of this device due to failure of following the user and safety instructions in this guide.

Product Introduction

Shelly® is a line of innovative microprocessor-managed devices that allow remote control of electric circuits through a mobile phone, tablet, PC, or home automation system. Shelly® devices can work standalone in a local Wi-Fi network or can also be operated through cloud home automation services. Shelly Cloud is a service that can be accessed using either an Android or iOS mobile application or with any internet browser at https://control.shelly.com/. Shelly® devices can be accessed, controlled, and monitored remotely from any place where the user has internet connectivity, as long as the devices are connected to a Wi-Fi router and the Internet. Shelly® devices have an Embedded Web Interface accessible at http://192.168.33.1 when connected directly to the device access point, or at the device IP address on the local Wi-Fi network. The embedded Web Interface can be used to monitor and control the device, as well as adjust its settings. Shelly® devices can communicate directly with other Wi-Fi devices through HTTP protocol. An API is provided by Shelly Europe Ltd. For more information, please visit: https://shelly-api-docs.shelly.cloud/#shelly-family-overview. Shelly® devices are delivered with factory-installed firmware. If firmware updates are necessary to keep the devices in conformity, including security updates, Shelly Europe Ltd. will provide the updates free of charge through the device embedded Web Interface or Shelly Mobile Application, where the information about the current firmware version is available. The choice to install or not the device firmware updates is the user's sole responsibility. Shelly Europe Ltd. shall not be liable for any lack of conformity of the device caused by failure of the user to install the provided updates in a timely manner.

Shelly Uni (the Device)

Shelly Uni (the Device) is a universal Wi-Fi sensor input and 2-channel solid-state switch.

Wiring

Connect the Device according to the wiring schematic at the top of the page. You can connect up to 3 DS18B20 temperature sensors or a single DHT22 temperature and humidity sensor. Check our knowledge base for more information and specific use cases at: https://kb.shelly.cloud/knowledge-base/shelly-uni

Warnings and Cautions

  • ⚠️ WARNING! ⚡️ Danger of electrocution! Do not connect the Device to sources of voltage higher than the specified.
  • ⚠️ CAUTION! Use the Device only with power supply and appliances which comply with all applicable regulations. A short circuit in 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! When mounting the Device, make sure its PCB is not in contact with any conductive materials.
  • ⚠️ CAUTION! Do not mount the Device at a place that is possible to get wet.

Initial Inclusion

If you choose to use the Device with the Shelly Smart Control mobile application and cloud service, instructions on how to connect the Device to the Cloud and control it through the Shelly Smart Control app can be found in the mobile application guide. The Shelly mobile application and Shelly Cloud service are not conditions for the Device to function properly. This Device can be used standalone or with various other home automation platforms and protocols.

⚠️ CAUTION! Do not allow children to play with the buttons/switches connected to the Device. Keep the Devices for remote control of Shelly (mobile phones, tablets, PCs) away from children.

Specifications

FeatureSpecification
PCB dimensions (LxWxH)33x20x13 mm
Power supply ?12 - 36 VDC or 12 - 24 VAC, 50/60 Hz
Electrical consumption< 1 W
Working temperature ?️-20 °C - 40 °C
Analog input ⬅️0 - 12 VDC (range 1), 0 - 30 VDC (range 2)
Binary inputs ⬅️2 (1 - 36 VDC or 12 - 24 VAC)
1-Wire interfaceSupports a single DHT22 temperature and humidity sensor ? or up to 3 DS18B20 temperature sensors ?️
Outputs ➡️2 potential-free MOSFET relays
Max. switching voltage36 VDC / 24 VAC
Max. current per output100 mA
Radio protocol ?Wi-Fi 802.11 b/g/n
RF band2401 - 2495 MHz
Max. RF power<20 dBm
Operational range (depends on local conditions)up to 50 m outdoors, up to 30 m indoors
MQTTYes
CoAPYes
Webhooks (URL actions)up to 22 with 5 URLs per hook
Schedules20

Declaration of Conformity

Hereby, Shelly Europe Ltd. (former Allterco Robotics EOOD) declares that the radio equipment type Shelly® Uni is in compliance with Directive 2014/53/EU, 2014/35/EU, 2014/30/EU, 2011/65/EU. The full text of the EU declaration of conformity is available at the following internet address: https://shelly.link/Uni_DoC

Manufacturer

Shelly Europe Ltd.

Address: 103 Cherni vrah Blvd., 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.

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