Stainless Steel Switch Water Level Sensor Double Ball Water Level Controller Sensor Switch for Pool(100mm / 3.94in)...

When I connect, the two black leads to my multimeter, I dont get continuity with any configuration of the floats. The red lead and the top float seem to respond normally. So I dont think I am wiring this incorrectly, I think the product is not functioning correctly. I guess Ill go back to the seller on eBay that I got my first float switch from that worked fine.

When I connect, the two black leads to my multimeter, I dont get continuity with any configuration of the floats. The red lead and the top float seem to respond normally. So I dont think I am wiring this incorrectly, I think the product is not functioning correctly. I guess Ill go back to the seller on eBay that I got my first float switch from that worked fine.

While not clear from the description, you can remove the C-clips and reverse the floats. As shipped, the lower float switch (black leads) are a completed circuit when the lower float is DOWN. Same for the upper float (red leads) are completed when the upper float is DOWN. But if you want, you can reverse the floats. In my case, I needed the upper float to complete the circuit when the upper float is is UP. No problem. Also, I have one of these in a fully submerged sump pit for the last 5 years. Mineral deposits have formed, but still water-tight and still working. I recommend.

These are well thought out. I placed the lower float between the primary pump float and in between the back up pump float. This way you set the alarm message as "Check if Main Pump Failed". The higher float I worded as "Extremely High Pit Water". These are CLOSED loop devices. Each contact opens at float trip levels. Alarms systems commonly use "closed loops" as part of the circuit supervision.

Excelente