Shelly DS18B20 Plus Add-On Sensor Adapter User Guide
- June 12, 2024
- Shelly
Table of Contents
USER AND SAFETY GUIDE
SHELLY PLUS ADD-ON
DS18B20 Plus Add-On Sensor Adapter
Read before use
This document contains important technical and safety information about the
device, its safety use and installation.
⚠CAUTION! 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).
Alterio Robotics EOOD 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 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 VDC
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 though 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 VDC (from Shelly plus device)
- Electrical consumption: < 0.5 W (without sensors)
- Analog input range: 0 – 10 VDC
- Analog input report threshold: 0.1 VDC *
- 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, Alterio Robotics EOOD declares that the equipment type Shelly Plus
Add-on is in compliance with Directive 2014/30/ЕU, 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
Manufacturer: Alterio Robotics EOOD
Address: Bulgaria, Sofia, 1407, 103 Cherni vrah Blvd.
Tel.: +359 2 988 7435
E-mail: [email protected]
Web: https://www.shelly.cloud
Changes in the contact data are published by the Manufacturer at the official
website. https://www.shelly.cloud All rights to trademark Shelly® and other
intellectual rights associated with this Device belong to Allterco Robotics
EOOD.
