Protect yourself when working on a job with a easy lock-out device placed onto a light switch cover using its own screws.  Simply loosen the 6-32 screws and slide the switch over the switch button. The design forced the switch to be placed in the down (off) position. You can even tighten the 6-32 screws when the Electricians Light Switch Lock is properly placed on.

[When working on a 3-way/4-way switch, simply install the cover upside-down on relevant switches.]

NOTE: I spray painted a paper plate black and rubbed it on the circle hand impression to stand out in the pictures shown.

SPECS

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Length: 2.25" (5.715cm)

Width: 0.724 (1.839cm)

Height: 3.5" (8.89cm)