For indoor use, common materials include durable plastic (polyethylene) and adhesive vinyl labels, which are ideal for applying directly to electrical panels and machinery. Both options provide a clear and lasting message. Our adhesive Emergency Shut Off Switch Label is a perfect example for direct-to-surface application. You can explore all options in our main electric shut-off signs department.

To ensure maximum visibility, mount the sign in an uncluttered, well-lit area on a contrasting background and position it as close to the shut-off control as possible. Using a sign with a bold, universally recognized design, such as our Emergency Stop Push Button Sign, helps to instantly draw attention. These best practices align with guidelines from NFPA 70E for marking electrical safety controls.

For outdoor applications, the best materials are those that can withstand the elements. Rust-proof aluminum is the top choice for longevity, but heavy-duty, outdoor-grade plastic also offers excellent resistance to weather, UV rays, and moisture. Our collection of custom outdoor signs offers a variety of these durable material options to meet your specific needs.

The correct size for your sign should be based on the viewing distance. For critical shut-off switches that must be seen from a distance, a larger sign is necessary. OSHA regulations for safety signs state that the signal word must be readable from at least five feet away. For maximum visibility from a distance, consider a product like our large Main Power Shut-Off Sign.