Video shows screws being removed from switch plate and then screwed back in off to the right. Do I have to make new holes in my switch plate???

No new holes ! Simply screw on top is switch plate. Nice idea my son's father in law kept shutting the boiler off instead of the basement lights

Will this device fit over a standard wall outlet, preventing things from being plugged into the outlet?

This is designed to fit over a rocker switch. The mounting design for Deco-style and GFCI outlets is the same as a rocker switch. It will fit over Deco and GFCI outlets to prevent things from being plugged in. It will not fit over conventional duplex style outlets due to a different mounting design.

What is the size of the hole in the center of the cover?

the open space inside the lock out cover is 1 1/2"H x 1 3/8"w this will directly go over a standard toggle switch with cover, or a rocker switch with it's cover. if you remove the tabs inside you will have a open space of 3" H x 1 3/8" w, but when doing this the cover has to be mounted to the mounting screws of the switch. we will add additional pictures to our listing to help you

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Master Lock 496B Lockout Tagout Universal Wall Switch Cover, Red 0.312 in. Shackle Diameter

Master Lock 496B Lockout Tagout Universal Wall Switch Cover, Red 0.312 in. Shackle Diameter

Product ID: 2464198

Details

Brand
Master Lock
Color
Red
Finish Type
Polished
Material
Plastic
Product Dimensions
1.75"W x

🔒0.312 in. shackle diameter lock-ready

⏱️5-minute quick screw-in installation

🛠️Universal fit for toggle & Decora switches

€ 25.47

Duties & taxes included

In stock

Sold byAmazon PortugalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔐 Lock it down, power up your peace of mind!

RAPID SETUP - Screw-in installation completed in under 5 minutes—no downtime, no hassle.
DURABLE VISIBLE - Bold red polished finish signals caution and prevents accidental switch operation during maintenance.
OSHA READY SAFETY - Integral part of OSHA-compliant lockout tagout programs, ensuring workplace and home safety standards.
LOCKOUT CONFIDENCE - Patented hinge design keeps switches locked ON or OFF, eliminating accidental power disruptions.
UNIVERSAL COMPATIBILITY - Seamlessly fits both toggle and Decora™ wall switches for versatile safety coverage.

The Master Lock 496B Universal Wall Switch Cover is a durable, OSHA-compliant lockout device designed to secure toggle and Decora™ switches. Featuring a patented hinge that locks switches ON or OFF, it prevents accidental power interruptions during maintenance or everyday use. With a quick 5-minute screw-in installation and compatibility with padlocks up to 0.312 inches in shackle diameter, this bright red cover is the essential safeguard for professional and home environments alike.

Specifications

ASIN	B001925P6W
Best Sellers Rank	#41,957 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #31 in Lockout & Tagout Devices
Brand Name	Master Lock
Color	Red
Configuration	Single
Customer Reviews	4.4 4.4 out of 5 stars (760)
Finish Types	Polished
Global Trade Identification Number	00071649225550
Included Components	Unit^Instruction Guide
Installation Type	Screw-In
Item Dimensions W x H	1.75"W x 4.75"H
Item Type Name	Lockout Tagout Device
Item Weight	0.04 kg
Manufacturer	Master Lock
Manufacturer Part Number	496B
Manufacturer Warranty Description	Limited Lifetime Warranty
Material Type	Plastic
Model Number	496B
Switch Type	Toggle
UPC	800187925611 078433312151 641438452018 094705467541 809099152221 071649225550
Unit Count	1 Count

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