please help

I want to build a safety device , heres what i need it to do.

I need a load sensor circuit which will sense a small hot glue gun when it is plugged in to a GFCI outlet :? , and turn an LED on, around 20 feet away.

It would be nice if it could be placed in a double gang PVC weather proof box with two GFCI outlets.

Any help would be great thanx

Once again my thanks to Bill Bowden for his excellent collection

AC Line Current Detector - [scroll down two thirds of page ]
**broken link removed**

Alternatively just detect if the cable is live..
https://www.electro-tech-online.com/custompdfs/2004/11/Invisible20Broken20Wire20Detector.pdf

As for getting this information to an LED , this can be done many
ways..pair of wires, Infra red, Radio transmitter, Ultrasonic

u ya i'll have to try that