Shelly SSR Add-on switches DC loads up to 30 V / 300 mA via wired communication, compact black design for discreet smart home integration, 36-month warranty.
Shelly SSR Add-on – DC Switch Module for Smart Home
The Shelly SSR Add-on is a sensor extension module designed to control DC loads in smart home installations. It enables wireless switching of DC-powered devices with a maximum load of 30 V / 300 mA.
Switches DC loads up to 30 V / 300 mA reliably via wired system communication
Compact design fits into standard mounting boxes and integrates seamlessly into existing Shelly setups
Black finish blends discreetly into any installation environment
Unlike standard relay modules, the SSR Add-on is specifically engineered for DC loads, making it ideal for applications where AC relays would be unsuitable. Its wired system communication ensures stable, low-latency control without relying on wireless protocols.
Ideal for...
Homeowners and installers looking to add DC switching capability to their Shelly smart home system — particularly for controlling LED strips, small DC motors, sensors, and other low-voltage DC devices in residential or light-commercial settings.
Application of Shelly SSR Add-on
Mount the module in a standard DIN rail or surface-mounted box
Connect the DC load to the output terminals within the 30 V / 300 mA rating
Integrate with the Shelly system via wired communication
Control the connected DC device through the Shelly app or automation rules
Shelly is a Swiss smart home manufacturer specialising in wireless and wired switching modules, sensors, and automation components for residential and commercial installations. The brand focuses on compact, DIN-rail-mountable devices that integrate into existing building automation setups. Shelly products are widely used in European smart home projects for their open protocol support and reliable wired communication.
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