Why are there Exit Signs?

Описание к видео Why are there Exit Signs?

Watch to learn the features of exit signs and how they work. When the S.E.R. was being built, I put in an electrical box above the door with 120VAC running into the box. This allows me to install an exit sign above the door. Thank you for viewing! .

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12/29/2020 UPDATE

Get fire alarms for hobby usage:
Want to support this channel and build a fire alarm collection? Check out sersafety.com

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