Shelly Pro Sensor Add-on

Galvanically isolated DIN-rail add-on for Shelly Pro devices, connecting DS18B20/DHT22, 0-10 V analog, ±15 V digital, and dry-contact sensors for monitoring and automation in homes or industry.

Shelly Pro Sensor Add-on is not a standalone device and must be connected to a compatible Shelly Pro device for power and operation. Compatible devices: Shelly Pro 1/2, Pro 1PM/2PM, Pro Dimmer 1PM/2PM, Pro EM-50, Pro 3EM, Pro Dimmer 0/1–10V PM. Pro host device needs FW version 2.0 to run the Pro Sensor Add-on.

Transform your Shelly Pro device into a powerful sensor hub with the Shelly Pro Sensor Add-on. This galvanically isolated interface lets you connect multiple sensor types for real-time monitoring and advanced automation in any environment - residential, commercial, or industrial.

It provides two 1-Wire interfaces, two analog inputs (0-10V), two digital inputs (±15V), and a potential-free solid-state relay output, giving you maximum flexibility to build customized, intelligent solutions.

Compatible with most Arduino sensors, the Shelly Pro Sensor Add-on opens the door to limitless applications.

Main features

• Expands functionality of selected Shelly Pro devices with additional sensor connectivity.
• Galvanically isolated for safe and reliable operation.
• Supports multiple sensor types for advanced automation.
• 2× DATA (1-wire data terminals) – connect up to five DS18B20 temperature sensors, one DHT22 for temperature and humidity, or other 1-Wire devices.
• 2× Analog inputs (0-10V) – suitable for sensors such as CO₂, pressure, light, or other analog types.
• 2× Digital inputs (±15V) – for motion detectors, leak sensors, switches, and more.
• 1× Potential-free solid-state relay input – ideal for relays, alarms, or other external circuits.
• Compatible with most Arduino sensors for custom projects.
• Ideal for DIN rail installations in residential, commercial, and industrial environments.

Use cases

• Monitor and Control Critical ConditionsInstall the Shelly Pro Add-on in your DIN-mounted setup to track temperature, humidity, open doors/windows, or other key data directly from the electrical panel.
• Optimize HVAC and Energy UseConnect temperature, humidity, and other sensors to fine-tune heating, cooling, and ventilation for maximum comfort and efficiency.
• Automate Lighting with Motion DetectionUse a PIR sensor to turn lights on only when a room is occupied - ideal for hallways, storage areas, or office spaces.
• Protect Against Leaks and WeatherIntegrate water leak, rain, or wind sensors to safeguard your property and automatically react to environmental changes.
• Smart Irrigation and Outdoor ControlPair with a soil moisture sensor to water only when needed, or automate awnings and blinds for weather protection and comfort.
• Custom Projects and Specialized MonitoringLeverage compatibility with Arduino sensors to build unique solutions for homes, aquariums, or industrial applications.

Main applications

• Residential
• MDU (Multi Dwelling Units - apartments, condominiums, hotels, etc.)…
• Light commercial (small office buildings, small retail/restaurant/gas station, etc.)…
• Government/municipal
• University/college
• Farming