XS4 Original Double Reader - EU
The SALTO XS4 Original Double Reader - EU is a smart electronic escutcheon lock that provides independent access control for both the entry and exit sides of a door. Designed to retrofit most Euro profile doors and compatible with a wide range of mortise locks and cylinders, it supports RFID credentials including MIFARE, LEGIC, and HID technologies. The lock records both entry and exit events in its audit trail and is ideal for applications requiring controlled bidirectional access and detailed activity monitoring.
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XS4 Original Double Reader - EU
Control This Device With Seam API and Salto KS
Connect your Salto KS with Seam API to use these features.
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Capabilities
What you can do with this device, using Seam API.
About Salto KS
Please note that using this integration requires you (the end user) to sign a waiver (EULA) with Salto before accessing the Salto API via Seam (or any other way).
Device Connectivity
Ensure connectivity is properly configured within the ACS and confirm with your ACS administrator if needed.
Control Access Remotely with Salto XS4 Original Double Reader - EU
The XS4 Original Double Reader - EU by Salto supports remote unlocking via the Seam API.
Beyond admin or staff workflows, you can embed an "Unlock" button directly inside your customer-facing app, allowing authorized end-users to open a door, gate, or locker themselves during their reservation or membership window—no front-desk hand-off required.
This pattern works particularly well for:
- Spas, wellness, and yoga studios: let members unlock treatment rooms, lockers, or studios on arrival
- Golf practice ranges: unlock bays, ball machines, or driving-range gates from the customer's app
- Tennis and racquetball clubs: authorize court access during the booked time slot, with no front-desk hand-off
- Fitness studios and gyms: give members 24/7 self-service entry tied to their active subscription
- Co-working spaces and shared offices: let members open the front door or private suites from a branded app
You can also trigger unlock actions programmatically—for example:
- Add a button in your app or admin dashboard to unlock a door or gate
- Allow staff to remotely grant access during a reservation
- Enable backup access in case a user cannot use their code
- Build simple interfaces for operators to manage access live
Combined with scheduling or reservation logic, this allows you to create flexible access experiences—for example, enabling a "Unlock" button that only works during an active booking time window.