Ruesious 2 Pieces ZP4510 Liquid Water Level Sensor Vertical Float Switches

Switches work as expected, good price, long term reliability will have to be waited on. This type of switch rarely last more than a year in my aquarium auto top up system so not a problem as cheap and easy to replace. I would have liked the wires to be a little longer but still useable

Works great. I was a bit worried as I guess I needed normally open and didn't really want to mount it with the wires submerged, but all you have to do is take the clip off the bottom and flip the actually floaty bit. Works a charm!

Does what it should hasn’t failed me in any way yet so would recommend

I first had a problem with the float bouncing up and down, so the pump kept turning on and off continuously. But I realised I’d put the pump and switch in the same plastic container, so the pump kept moving the float. I put the switch in a separate container. No problem then. The switch worked perfectly and is still working.I did damage a second float switch by using it with a pump which drew to much current, but that was my own fault too

A good quality easy moving float switch. It can be mounted uodide down making it normally open. It makes a closed switch when the block hits the shaft washer. Cheap, reliable. Have 2, going to get 3 more.

Works great as replacement float for ato.

both failed when connected to simple 12 volt relay activation circuits drawing 0.5a 12 volt. not worth effort to return them - probably ok if triggering surface mount circuits.

The switch on ok, but switch off when level drops