Story at a glance:
- Salto’s XS4 Eco Lock brings wireless smart access to lockers across workplaces, fitness centers, transit hubs, and educational facilities
- Manufactured with halogen-free materials and designed for durability, the lock adapts to evolving building needs and uses, accommodating everything from hot-desking offices to luxury spas.
- The battery-powered system eliminates electrical infrastructure while supporting up to 125,000 operations from a single battery set.
As the line between professional and personal spaces blur, the locker has become a flashpoint for how buildings adapt to the changing needs of everyday users.
From corporate offices embracing hot-desking to fitness centers managing peak-hour crowds, from transit hubs serving commuters to university campuses supporting more flexible schedules, the humble locker is tasked with more operational weight than ever before. What was once an analog technology—key-based, coin-operated, singularly assigned—is now flexible, accessible, and in demand.
Salto’s XS4 Eco Lock responds to this shift. The wireless, battery-powered system employs smart access technology to lockers, creating unified credential experiences across building types. Whether an employee uses their badge to enter the office and access a hot-desk locker or a gym member taps their phone to claim available storage, the XS4 integrates into existing access control platforms.
“Smart lockers are becoming part of ecosystems that include building and door access, cashless payments, and visitor management,” says Blake Pierce, category manager for smart lockers at Salto. “The XS4 Eco Lock is about extending the same seamless, secure experience that users have at building entrances down to personal storage areas.”
Design for Flexibility
Photo courtesy of Salto
The XS4 Eco Lock was engineered for two modes: fixed assignment, where specific users operate specific lockers, and free assignment, where users claim any available locker with their credential. This flexibility supports different building types with different needs, from permanent employee lockers in corporate environments to temporary storage in fitness facilities to shift-based usage in health care settings.
The system works with both physical RFID credentials and mobile access through Salto’s JustIN Mobile platform. Users tap their card or smartphone against the lock button, which provides feedback through a colored LED ring indicating locker availability and credential acceptance. For building owners already using Salto’s access control platforms like Space, KS, or Homelok, the XS4 integrates without additional infrastructure.
Installation centers on simplicity. The 4-by-4-1 inch housing mounts inside locker doors with no wiring required. A reversible plug-and-play configuration means the same lock works on right-handed and left-handed doors, accommodating door thicknesses from less than an inch to just over an inch across wood, steel, or alternative material construction. “The wireless design eliminates the need for electrical infrastructure, which reduces cost and installation complexity,” Pierce says.
This approach separates the lock hardware from the locker itself, giving architects additional leeway in designing the locker’s form factor to accommodate different applications, use cases, and brand or design elements.
Sustainability Locked In
Photo courtesy of Salto
The XS4 Eco Lock uses halogen-free polycarbonate, a material choice that signals Salto’s broader environmental commitments without compromising performance.
Battery life is designed to perform 125,000 operations per battery set, or approximately four years of typical use. Three AA batteries power the lock through its entire service cycle, eliminating the constant replacement schedule that plagues many systems. “The battery-powered wireless design eliminates the need for low-voltage electrical wiring throughout locker rooms, reducing both material use and installation waste,” Pierce says.
That wireless architecture represents the most significant environmental shift. Traditional wired locker systems demand electrical infrastructure throughout locker rooms, including low-voltage wiring, conduit, junction boxes, electrical work. The XS4 eliminates all of it. For retrofit projects this means avoiding the complexity and waste of removing old wiring and installing new electrical pathways throughout the building. The lock adapts to what’s already there rather than demanding the building adapt to it.
Salto demonstrates its environmental leadership through a commitment to sustainability, from carbon-neutral manufacturing to circular design principles that extend throughout every product’s life cycle. The XS4 Eco Lock, manufactured by Gantner—a SALTO WECOSYSTEM company—with integrated Salto technology, embodies these values by transforming everyday building components into sustainable access solutions.
As mobile credentials become standard and building systems integrate more deeply, smart lockers position themselves as connection points in larger access ecosystems. The XS4 integrates fully into Salto’s platforms, benefiting from updates and new features over time, adapting as technology and building needs evolve.
