Vol.304 May 2026
OMRON’s open/close detection
technology helps ensure safety
and security of society
Stable open/close detection is essential for enhancing the safety and reliability of various machines and devices around us.
OMRON’s switches and sensors provide open/close detection tailored to the diverse design requirements and installation environments of each piece of equipment. With their stable
detection performance and high reliability, these components
help ensure safety and security in our daily lives.
OMRON’s switches and sensors are widely used to detect the opening and closing of
various devices and products around the world.
For equipment that
requires waterproofing and dustproofing and has limited installation space
For equipment that
requires frequent opening and closing and stable operation
For equipment that
requires safe current-breaking performance
For equipment where
foreign matter generated by mechanical contact is a concern
Example: Opening and closing the washing machine door
The washing machine cannot be operated unless the door is closed.
Example: Opening and closing the microwave door
Stable opening and closing can be ensured even in areas subject to frequent operation and severe impact
Example: Opening and closing the waste bin door of a shredder
Safety can be enhanced by cutting off the main power supply as soon as the waste bin door opens
Example: Opening and closing the door of a pass box in a cleanroom
Protruding objects on the door can be detected without contact to prevent foreign matter generation
Waterproof, dustproof, and small-sized switches
are appropriate
Switches with a snap-
action mechanism that allow for quick and stable contact opening and closing
are appropriate
Switches with a double
spring return mechanism or direct opening mechanism that offer high current-breaking performance
are appropriate
Sensors with no
mechanical contact and variations in slot width
are appropriate
Photomicrosensors (transmissive type)
EE-SX4320, EE-SX4330
EE-SX4340/3340
EE-SX4350/3350
* Contents as of April 2026.
In the interest of product improvement, specifications are subject to change without notice
