Feasible with Arduino: Detecting If Power Present, Then Use to Trigger an Alert

[cyberneticraven]

I am new to Arduino! Purchasing my first boards next month for some projects. I was wondering if the following project is possible.

In the woodshop at work we have a push button remote that turns a wireless outlet on and off. This outlet is used to turn a strobe light on outside the shop. It's purpose is to alert other workers that there may have been an accident in the shop.

With Arduino, could I detect when that is powered which will trigger it to send an alert to phones. I can figure out what program/service to use for the alert easy enough I think. I just want to know if an Arduino can be used to detect that power. The Arduino itself will be powered at all times so it can have a connection to internet (if that is possible?), but then have it detect that power coming on in some way.

[Railroader]

Use a 5 volt adapter connected to a digital input having a pull down to GND.

[blh64]

You should plug your arduino into that wireless outlet. If it has power, it will power up the arduino and the arduino can then send its alerts. If the outlet has no power, the arduino won't either.

[robgee86]

Another option, if you're using Arduino Cloud, is to define a boolean variable and configure a Cloud Trigger to send the alert either via e-mail or push notification when it's true. See here.