Is there a sensor I can put in the basin the washing machine drains into that will turn off the washing machine if the water level reaches the top of the basin tub (to prevent what could happen if the drain gets clogged)?
You need a float switch. Most hardware stores should carry them. We used to put a nylon stocking on the end of the drain pipe to catch the lint that would plug the drain. Hope this helps.
Correct answer above, but you need just a little more information. You will have to wire the float switch in series with the recepticle your washer is plugged in to. That way if the float raises to the level of overfill, it will open the circuit to the washer. Once the water level falls, the washer will start again.
