Dual Channel Interlock® SwitchDual Channel Interlock® Switch

The Lasermet IS-MDC-12 is a dual channel coded magnetic door safety contact, which is used to detect when a door or other moveable cover forming part of a protective enclosure is open.

The IS-MDC-12 has three contacts, two of which are closed and one of which is open when the door is closed. All three contacts change over when the door is open.


  • Dual channel or single channel use
  • Small – good looking sleek design, blends in with professional standard laboratories and hi-tech premises
  • High performance and high reliability. The IS-MDC-12 can achieve Performance Level ‘e’ as specified in BS EN 13849-1:2008 when correctly wired to a suitable Interlock® controller.
  • “Coded” design. i.e. The magnetic field is arranged such that the switch cannot easily be defeated by a single magnet
  • Measuring just 67mm wide, 29.5mm tall and 13.5mm deep, the dual channel Interlock® switch has a compact footprint
  • Designed and manufactured by Lasermet (having over 25 years’ experience in laser safety design, manufacture and installation)
  • High tolerance to offset alignment (See pdf download for details)
  • Concealed rear, or top, cable entry
  • Conforms to CE requirements


Contacts: 2NC / 1NO
Rating: 300mA Resistive Load 50V
Channels: Dual
Magnet Coupling: Coded
Maximum Range: Typically 10mm
Safety Performance: Up to EN 13849-1:2008 PL’e’
Operating Environment: -5° to +45°C, 0 – 95% RH
Environmental Protection: IP50
Switch Size: 67 X 29.5 X 13.5mm
Actuator Size: 67 X 29.5 X 13.5mm
Lead Length: 2m approx.
Combined weight: 85g approx.
Conforms to: BS EN 1088:1995+A2:2008 Safety of machinery – Interlocks