Behind the sleek, white walls of this two-bedroom 15th-floor condo at 148 East 24th Street , a fully outfitted smart home integrates the latest in cutting-edge tech, from voice-activated lighting and climate control to the latest security and entertainment systems. Asking $1,995,000, the Manhattan condo’s modern luxury doesn’t end at the walls: A private balcony adds outdoor living to daily life.

The home’s current owner made a significant investment in the high-tech upgrades that lie behind every surface. Sonos speakers have been installed throughout, joining motorized blackout shades, hardwired Apple TVs, Ethernet and WiFi access points in every room, and LED lighting and USB outlets throughout.

The open living and dining area forms a great room framed by open city views through floo

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