The AMSTOP is a heavy duty unit with a head that can rotate in 90o increments and a handle that can be turned through 360° in 45° increments, allowing for a high degree of misalignment. Suitable for both sliding and hinged door applications, the AMSTOP has a coded tamperproof locking mechanism and is fitted with a shear pin to protect both machinery and personnel.

When the machinery is in operation the handle is engaged and the power is on. If accesss is required, the door is simply opened releasing the handle from the unit, giving positively guided, forced disconnection of the safety switch contacts. At this point a red LED status indicator is illuminated.