Boat Bilge Pump Switch With Alarm

Absolutely great gadget to protect your boat. You need two float switches with this, One to turn on the bilge pump at the lower level and a second one that will cut in if the first one fails and sets an alarm off.. But the real joy of this is even if you have turned your bilge pump off it will override the off switch and still pump out the bilges and set the alarm off if the water reaches the second level. so even if you forget to leave you bilge pump on you are still protected. Great gadget and peace of mind.