Industrial Signs 130mm x 60mm Important RCD Testing Label (Roll of 100)

Important - this installation or part of it is protected by a device which automatically switches off the supply if an earth fault develops
Test six-monthly by pressing the marked 'T' or 'test'
The device should switch off the supply then be switched on to restore the supply
If the device does not switch off the supply when the button is pressed, seek expert advice
Self adhesive vinyl