Delay access to hazardous areas until conditions are safe; use these switches with machines that take time to stop after they are turned off. Mount the switch to the door frame and mount the key to the door so that the key is inserted into the switch when the door is closed. When the door is pulled, the key is held in place with 225 lbs. of force until the switch receives a signal from a time-delay relay, motion sensor, or position sensor (not included) that the machine’s motion has stopped. After the motion has stopped, the key can be removed from the switch, releasing the access door. They’re often used with machine guards. All have positive-force, normally-closed contacts that will open a circuit when the switch is actuated even if a spring fails or the contacts stick. They’re rated for protection from washdowns and temporary submersion.

Style A and B have a key entry on the top and side of the switch.

Style C has a key entry on two opposite sides of the switch.

Emergency override keys (sold separately) bypass the access delay feature.

For technical drawings and 3-D models, click on a part number.

Use fingerprints to confirm the identity of personnel before granting access to secure areas or equipment. Switches light up green to indicate that they have accepted the fingerprint and are sending an output signal. The front faces of the switches meet NEMA 12 and IP65. The rear faces of the switches meet IP20.

Covers (sold separately) have an adhesive-back hinge, so you can stick them on to your switch. Keep the cover flipped down to protect the switch’s sensor from dust and debris.

For technical drawings and 3-D models, click on a part number.