Smaart.haus is a German online retailer specializing in smart home products and intelligent living. The company describes itself as a destination for smart home enthusiasts, combining product expertise with goods shipped directly from its warehouse in Germany. Its range covers home security, lighting and shading, heating and climate control, automation, and energy management.

Customers can browse alarm systems, cameras, access-control devices, smoke and water sensors, smart lights, switches, plugs, dimmers, and in-wall modules. The store also offers thermostats, room and outdoor sensors, smart home hubs, signal repeaters, buttons, remotes, USB adapters, and solar and energy-monitoring products. Brands featured include Aeotec, SmartThings, Shelly, TESLA Smart Home, and LED Trading. Products include options using technologies such as Zigbee, Z-Wave, and Wi-Fi, and the site provides a compatibility overview to help shoppers check devices against their gateways.

Smaart.haus offers customer support, a returns center, and information on shipping, compatibility, and product use. It states that orders placed on a business day are dispatched within 24 hours and accepts several payment methods, including PayPal, card, and Klarna.