The only way to tell is to press the "test" button and then the "reset" button. If the GFCI blinks RED once it is a self-test model. If the LED turns immediately to GREEN, it is a non-self-test model.
The only way to tell is to press the "test" button and then the "reset" button. If the GFCI blinks RED once it is a self-test model. If the LED turns immediately to GREEN, it is a non-self-test model.