1. Introduction
The Shelly Plus Add-On is a versatile accessory designed to expand the functionality of your Shelly Plus devices. It acts as a galvanically isolated sensor interface, enabling the connection of various external sensors to your Shelly Plus relays. This allows for precise measurement of environmental parameters such as temperature and humidity, as well as integration with other analog and digital sensors for advanced home automation scenarios.
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your Shelly Plus Add-On.
2. Safety Information
Please read this user guide carefully before installing or using the device. Failure to follow these instructions may lead to malfunction, danger to your health and life, violation of law, or refusal of legal and commercial guarantee. Shelly is not responsible for any loss or damage in case of incorrect installation or operation of this device.
- Ensure the device is installed by a qualified electrician or person with appropriate knowledge.
- Disconnect power to the Shelly Plus device before connecting the Add-On or any sensors.
- Do not expose the device to water or high humidity.
- Use the device only with Shelly Plus devices as intended.
- Observe all local and national safety regulations during installation and operation.
3. What's in the Box
- 1 x Shelly Plus Add-On
- User manual
4. Specifications
| Feature | Specification |
|---|---|
| Model Number | 3800235266427 |
| Dimensions (L x W x H) | 1.46 x 1.65 x 1.46 inches (37mm x 42mm x 37mm) |
| Weight | 13 Grams (0.46 ounces) |
| Material | Plastic |
| Connectivity | Wi-Fi, Bluetooth |
| Sensor Support | Up to 5 DS18B20 temperature sensors, 1 DHT22 humidity sensor, NTC resistors (10 kΩ nominal, β=4000 K), Photoresistors, PIR sensors, Soil moisture sensors, Ultrasonic proximity sensors, Capacitive liquid level sensors, Sound detectors, Analog sensors (0-10 V output) |
| Inputs | Analog Input, Digital Input |
The Shelly Plus Add-On is designed for compact integration with Shelly Plus devices.
Image: Shelly Plus Add-On showing its compact size and dimensions (42mm x 37mm).
5. Setup and Installation
The Shelly Plus Add-On is designed to be easily connected to compatible Shelly Plus devices. Ensure the main Shelly Plus device is powered off before proceeding with any connections.
5.1 Connecting the Add-On to a Shelly Plus Device
The Add-On typically snaps onto the main Shelly Plus device. Refer to the specific Shelly Plus device manual for exact connection points.
5.2 Sensor Wiring
The Shelly Plus Add-On provides terminals for various sensor types:
- 1-Wire Terminals (VCC, DATA, GND): For DS18B20 temperature sensors (up to 5) or DHT22 humidity sensors (1).
- Analog Input (GND, ANALOG IN): For analog sensors with 0-10V output.
- Digital Input (GND, DIGITAL IN): For digital sensors like reed switches or PIR sensors.
- VREF OUT / VREF + R1 OUT: For NTC resistors and other specific sensor types.
Image: Detailed wiring diagrams for connecting various sensors (DS18B20, DHT22, analog, digital) to the Shelly Plus Add-On.
5.3 Initial Configuration
After physical installation, power on the Shelly Plus device. Use the Shelly Smart Control App to discover and configure the Add-On and connected sensors. The app allows you to manage settings and integrate the sensors into your home automation system.
6. Operating Instructions
The Shelly Plus Add-On extends the capabilities of your Shelly Plus device, enabling a wide range of automation possibilities based on sensor data.
6.1 Temperature and Humidity Monitoring
Connect DS18B20 sensors for temperature or a DHT22 sensor for both temperature and humidity. The Shelly Smart Control App will display the readings, allowing you to create automation rules based on these values.
Image: Shelly Plus Add-On connected to a temperature probe, illustrating precise measurement capabilities.
6.2 Automation Scenarios
- Smart Irrigation: Combine with a soil moisture sensor to activate irrigation only when necessary, optimizing water usage.
- Aquarium Temperature Control: Use two DS18B20 sensors to monitor aquarium temperature and trigger heating/cooling systems via a connected Shelly Plus relay.
- Garage Door Status: Connect a reed-switch sensor to the digital input to monitor the open/closed state of your garage door.
Image: Illustration of the Shelly Plus Add-On connected to a reed-switch sensor to monitor garage door position.
- Motion-Activated Lighting: Connect a PIR sensor to the digital input to automatically control lights in frequently used areas.
Image: An office setting where a Shelly Plus Add-On, connected to a PIR sensor, controls room lighting.
6.3 Smart Schedules
Utilize the Shelly Smart Control App to set up schedules and scenes based on sensor data. This allows for maintaining comfortable and healthy environments by automatically adjusting devices connected to your Shelly Plus relays.
Image: A graphical representation of a smart home interface on a smartphone, demonstrating control over temperature and humidity through smart schedules.
7. Maintenance
To ensure optimal performance and longevity of your Shelly Plus Add-On:
- Keep the device clean and free from dust. Use a dry, soft cloth for cleaning.
- Regularly check for firmware updates through the Shelly Smart Control App to benefit from new features and improvements.
- Ensure all sensor connections are secure and free from corrosion.
8. Troubleshooting
If you encounter issues with your Shelly Plus Add-On, consider the following:
- Device not detected: Ensure the Add-On is correctly seated on the Shelly Plus device and that the main device is powered on. Check the Shelly Plus device's manual for proper installation.
- Sensor readings are incorrect or missing: Verify that the sensors are correctly wired to the Add-On terminals. Check sensor specifications and ensure compatibility. Restart the Shelly Plus device.
- Connectivity issues: Ensure your Shelly Plus device has a stable Wi-Fi connection. Check your router and network settings.
- App issues: Ensure your Shelly Smart Control App is updated to the latest version. Try restarting the app or your mobile device.
For more detailed troubleshooting, refer to the Shelly support resources.
9. Warranty and Support
Shelly provides a 3-year device warranty for the Shelly Plus Add-On. For technical support, product specifications, guidelines, and community forums, please visit the official Shelly support page.
Image: QR code linking to the Shelly support page for easy access to assistance.
