ELECALL4" Float Switch Stainless Steel Tank Water Level Sensor 110V ES10010 Wire Length 12inch

the ratings are not right electrically for a reed switch .One cannot switch 120 v at 100 mA .To get it to live use 5-12 vdc with a relay , put a diode 1n4007 across the relay coil such that bar of diode ( stripe ) is toward the positive end of coil when on . Dont get it wrong you will hurt switch . When it shuts off ( opens) the diode suppresses the spark inside the switch . Will live forever . All the complaints if failures on here are due to overloading switch due to incorrect info / use in 120 v reaky or loads

Use these to prevent a cooling reservoir from overfilling for a hobby. They've worked reliably for 3+ years and control the water pump on a good hysteresis loop that allows for good on/off cycling.

would be nice to have an easier adapter at the end to find an attachment for. An easy to use switch.

Sorry, but People can not read directions.It works IN either NO or NC. Just Flip FloatYes, It can also be mounted from TOP or Bottom.IF IT FAILS its because you are trying to pull too much power through it.It is designed to switch a relay or something that pulls lower than 20Va.This thing is currently operating the water level in a Industrial Hot water Parts Washing machine. Water temps are 180 F. It is constanly having to fill. BUT as the directions explain, you need to use a relay to drive the water solenoid. I found one solenoid that is used for Ice Makers that is lower than 20 Va.

Before installation, I tested it with an ohm meter in a small cup and it behaved ok. I reversed the floaterso when it floats it opens the circuit. Then i installed it and connected it to 120VAC and a solid state relay as a load .... i pushed the floater up, circuit closed, relay was activated, all is well. I let the floater fall, nothing happened. Switch was frozen in closed position. I tried everything but cost switch would not open. This unit lasted me one cycle!!!

I use it to stop the pump when the water towner is full in my off grid garden. I have it run through a relay to start and stop the pump. Works very well.

I Purchased two And one only last about two months part time use other one seems to be fine

Needed a new float for an existing switch . Manufacturer wanted $173.46 for a whole new switch and wouldn't sell me just the float ! I don't know if this unit even works , but the float did and now i have a spare too . Ha Ha Ha .