best float switch for apex

hi
what is the best float switch for apex bob.i see price 1.79 to 30 dollar.which do u recommed?plz provide link if possible.
thanks.
 
I use several of these. They are Madisons but with mount and a connector on the end.
http://premiumaquatics.com/products/level-controller-repl-float-sensor-kit.html
They have a single shielded wire coming out of the switch. The wire is epoxy sealed. It has a 3.5mm plug tip which goes right into my custom breakout box. It includes a bracket that it snaps into with suction cups. I run a pair of them for my ATO. Both have to close to turn it on. I removed the suction cups and epoxied to magnet cleaners. 2 Per cleaner. I have another pair for high sump level and low sump level alarms. Having them on the magnet cleaners allows me to raise and lower my self level as I see fit. Not that I do that often.

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did u super glued the sensor to magnet holder?

As I said in the post above, I removed the suction cups from the brackets and epoxied the brackets to the magnet. Once the epoxy was set, I snapped the float switch back onto the brackets that were epoxied to the magnet.
 
did u super glued the sensor to magnet holder?

For reference, here is what the float switch and it's bracket look like when unassembled. The float switch is mounted to a small bracket. That bracket snaps into the included suction cup mount. Suction cups aren't terribly reliable so I removed the suction cups and epoxied the mount to the magnet. I did however use the suction cups for my fail safe float switches for a few years and they did hold fine but I wouldn't trust my ATO float switches mounted with suction cups. All my switches are now mounted via the magnet scubbers.

The switch snaps onto the mount.
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The lower bracket/mount in this photo with the suction cups is what I epoxied to my magnet scrubbers.
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The DIY I posted is the easiest and most user friendly; except it isn't the cheapest. But it works beautifully on my setup; I use 3 floats. Low-float to signal when the drain pump for my AWC needs to stop; normal-level float for my desired water level and high-level float for my alarm.

I can adjust them at will with just a screw of the nut and it takes up very little footprint. Looks really professional to boot, IMHO.
 
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