Mystery component at Subway sandwich shop

Does anyone know what this mystery component is on the exterior wall of a Subway sandwich shop?
I’ve also seen a picture of one of these on the exterior wall of a residential home. I apologize in advance for not having more information about these particular properties.


1 Like

That’s the alarm that goes off if they actually discover tuna in their tuna fish sandwich. It has yet to ever go off.

20 Likes

TaHAAAA! :slight_smile: :grinning:

3 Likes

Beat me to It Bahahhahahha!!! :+1:

3 Likes

Adam, my first guess is that it’s an exterior fire alarm/ security alarm.

5 Likes
3 Likes

That makes sense to be some fire alarm or security alarm component.

Yep, I’d say that’s pretty close to the same thing. Thank you, @jjonas