XS4 Eco Lock: Smarter, More Versatile Locker Lock Solution
Salto’s next-generation retrofit electronic locker lock is designed to bring all the advantages of smart access control to lockers and cabinets, while eliminating the complexity of wiring and infrastructure.
Today marks the release of our XS4 Eco Lock. Compact, durable, and fully integrated into Salto’s smart access ecosystem, our latest innovation delivers enhanced security, flexibility, and efficiency across a broad range of environments – from workspace and educational facilities to sports centres and hospitals. Future-proof your self-storage facility, for example—or any smart building.
The XS4 Eco Lock features a fully wireless, “plug & play” configuration designed for rapid and seamless installation, making it the perfect retrofit lock. Furthermore, the absence of wiring or the need for additional infrastructure ensures it adapts perfectly to all kinds of metal or wood lockers. Its reversible nature means it also fits effortlessly to right- or left-handed locker doors.
Of course, this cost-effective solution for replacing existing locker locks is equally at home on new developments, where usability and modernist visuals are paramount. These state-of-the-art locks boast dual-colour display to denote locker availability, and can be opened and closed securely, simply by holding an authorised user credential over the lock button.
The XS4 Eco Lock enables system operators to harness the power of mobile technology, streamlining building operations while enhancing overall security and the user’s keyless experience. As mobile credentials gain wider adoption, businesses can expect a more intuitive, user-friendly experience for users, while maintaining high security standards across their facilities.
The XS4 Eco Lock supports RFID, NFC, and Bluetooth® Low Energy (BLE) technologies, enabling access using smartcards, digital keys or mobile credentials.
Engineered for maximum performance and flexible design
The XS4 Eco Lock is a versatile, battery-powered smart locker lock designed for secure and efficient access control, offering seamless integration on any locker and reliable performance. Built using halogen-free V0 flame-retardant PC plastic, it’s designed for long-term performance and an improved, keyless user experience.
- Enhanced battery life.
- Quick installation.
- On-locker door lock placement.
- Low maintenance.
- Sleek, in-the-door-locker design.
- Integrates advanced smart access and ID technology, mobile credential and wireless connectivity.
All electronic components are securely housed inside the locker door, protecting them from vandalism and external damage. The device also meets DIN 4547-2 Class C break-in resistance standards and can be fitted to a broad range of door thicknesses and materials.
These wireless locks draw their power from three AA batteries. Battery life is optimized through intelligent power management, and low battery notifications are delivered via user credentials (SVN) or wirelessly via BLUEnet, minimizing downtime and facilitating maintenance.

















