Safety Interlock Switches GS-M series

Achieve the Top Safety Standards. PLe / Category4 / SIL3

Next Evolution of Door Interlocks

  • New Hybrid Door Interlock
  • Easy to Use
  • Install Anywhere
  • Easy to Integrate

GS-M series - Safety Interlock Switches

Safety interlock switches are safety devices used for checking whether movable machine guarding such as safety fence doors and covers are open or closed. KEYENCE’s GS-M Series safety interlock switch uses an electromagnetic locking principle and flexible actuator to prevent door rattling and misalignment for easy locking. The ultra-compact design can be used with any kind of door and can be installed anywhere. The GS-M Series offers superior safety in addition to the usability and reliability required for manufacturing sites without hindering productivity.


  • [NON CONTACT TYPE DOOR INTERLOCKS]Verify the door is shut / [LOCKING TYPE (Power-to-Lock) DOOR INTERLOCKS]Keep the door locked
  • [Based on Wiring]Door Closed / Door Closed & Locked [STRONG ELECTROMAGNET]
  • [Conventional Setup]Magnet latch / Non-contact Interlock [GS-M Series] Built-in permanent magnet

Hybrid Door Interlock

Introducing KEYENCE'S New Hybrid Door Interlock.

With the hybrid technology of the GS-M Series, one unit can act as either a locking type or non-contact type interlock. It also features a built-in magnetic latch that can hold the door closed, even when the lock is not activated.

Easy to Use

Alignment is no longer an issue with the GS-M Series.
It's keyless design does not require any insertion to lock, eliminating misalignment caused by improper positioning. The built-in spring and magnetic latch eliminate gaps between the sensor and actuator, significantly increasing alignment forgiveness.


With conventional interlocks, the key cannot be inserted if the door is misaligned, preventing it from being closed.

GS-M Series

Because the GS-M does not require any insertion to lock, common misalignment issues are eliminated.

Install Anywhere

The small footprint of the GS-M Series allows for mounting on any side of a door frame or in areas with limited space. The GS-M lineup also includes two different models to accommodate for both sliding and hinged doors.

Easy to Integrate

The GS-M offers multiple connection options for simplified wiring.

Easy and flexible integration can be achieved through the dedicated
Wiring Saving Unit (GS-T01) or by cascading multiple units of the GS-M/GS Series.

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    Closed and Locked