Anndason 6 Pieces Plastic PP Float Switch Fish Tank Liquid Water Level SensorModel: DP5200

I used this float to monitor the activity of a sump pump (specifically looking for when the water level dropped which indicated the sump pump had run). After trying various other gadgets like a water level sensor (which failed in a matter of days), this float has been working flawlessly for weeks. It is used simply as a switch, with no load in the circuit. It is attached to an A-D converter that is connected to an Arduino Wifi that logs pump activity to a database on a web server. The float acts essentially as a resistor -- either very high resistance when the switch is open, and very low resistance when the switch is closed.I suspect that people who have had issues with this float have a load in the circuit that contains this switch, thereby drawing current through the float. Instead, use the float to send a signal to, say, an Arduino which then controls a relay that switches power to the load. This will keep the current through the float at a very low level. No need for an expensive Arduino -- a basic Nano will do.

No me gustó de los seis ninguno funcionó

This is total failure.. it simply don't work

I liked that it gave me an option to Screw down the switch onto something to hold it in place, and one thing I didn’t like is that when I bumped the switch, sometimes it did not activate. However I don’t see that being an issue in normal use.

I needed a float switch that turned on when activated. These are normally closed when empty.