SSR Add-on for Shelly The Pill – Control Interface for Solid State Relays (SSR), Power Automation

The SSR Add-on is a professional expansion module, designed exclusively to extend the capabilities of the Shelly The Pill sensor. This accessory transforms your monitoring sensor into a smart controller capable of controlling Solid State Relays (SSRs). By simply connecting it to the dedicated port, Shelly The Pill can now manage high-power electrical loads — such as industrial heating elements, motors or complex HVAC systems — providing a silent, fast and extremely reliable automation solution.

Key Benefits

• Noiseless Power Control: Unlike mechanical relays, the use of an SSR via this add-on eliminates the ‘click’ noise and mechanical wear, making it ideal for residential environments or applications involving frequent switching.

• High-Frequency Switching: Enables precise load control, being compatible with thermostat-type algorithms that require repeated on/off cycles to maintain a constant temperature.

• Isolation and Safety: The interface provides galvanic isolation between the Shelly The Pill sensor (the control unit) and the SSR relay’s power circuit, protecting electronic equipment from potential power surges.

• Native App Integration: Once connected, the module is recognised by Shelly The Pill, allowing you to create ‘If-Then’ rules based on temperature or humidity to switch power-consuming devices on or off.

• Quick Installation (3.5 mm jack): It connects instantly to the Shelly The Pill’s sensor port, transforming a monitoring device into a fully-fledged smart thermostat in just a few seconds.

• Maintenance-Free: As a semiconductor-based solution (when paired with a suitable SSR relay), the system requires no maintenance and has a much longer lifespan than traditional contacts.

Examples of Use

1. Precision Heating Thermostat: Control of radiant panels, electric underfloor heating mats or high-power electric radiators via an external SSR.

2. Boiler Automation: Controlling electric water heating elements based on the temperature read by sensors connected to Shelly The Pill.

3. Industrial Ventilation Systems: Switching high-capacity fans or hot-air blowers on and off in warehouses or greenhouses.

Technical Specifications

• Product Type: Add-on module for controlling solid-state relays

• Input Interface: 3.5 mm jack (compatible exclusively with Shelly The Pill)

• Output Signal: Control signal optimised for the command input of SSR relays (DC Control)

• Compatibility: Shelly The Pill, standard Solid State Relays (SSR)

• Installation: Plug-and-play via cable

• Housing: Durable thermoplastic material

Package contents: 1 x SSR Add-on for Shelly The Pill, User Guide. (Note: The Shelly The Pill sensor and Solid State Relay (SSR) are sold separately).

Why choose the SSR Add-on?

If you own a Shelly The Pill sensor and want to move from simple monitoring to active temperature control, the SSR Add-on is the essential link. It is the most elegant technical solution for controlling equipment rated at thousands of watts with the precision of a digital sensor, whilst maintaining a silent and durable system.