Was easy to install and saved me after my sump pump float switch failed. Seems to be well made and very reliable so far! Very happy I bought it.

Used this to get a longer on/off cycle on my sump pump. Work as advertised.

As someone who enjoys travelling extensively, mechanical float switches are a constant worry, as they will fail (stick on/off) without warning. This is really the last worry of leaving my house for longer periods, that has now finally been solved. I have two sump pits, and installed these switches on both. The install is very easy, including the variation for pits with high mineral content/water softener discharge. Also, the ability to set a wider high/low range, resulting in fewer pump cycles, is a nice bonus.

Our sump has water flowing in continuously. Our pump typically has run every 10 minutes or sooner if during/after a storm. The life cycle of the vertical float switches end up being 2 to 3 years which means I've had to replace a few. The electronic switch allows me to extend the life of the pump as I can let the sump fill higher so that the pump runs half as often for twice as long which is easier on the pump.I had an installation question which I referred to HydroCheck support. The response was quick and gave me more information than actually requested which aided me and eliminated a likely follow-up question. They also told me that there are two wires going to each sensor so that they have built in redundancy in case a wire breaks. This helps explain why they believe in their product and give a 5 year warranty.

Flexible and easy monitoring from the light.Had it on my principal pump for 10 years. Replaced one time after 6y which is fair.

I bought this electronic switch as the switch on my sump pump is not adjustable. It is very easy to install and adjusting the timer is relatively easy. I have a high water table and the switch goes off every 10-15 minutes. I have been using it for about 6 months no problems yet. P.S. I bought a second one for the pump at my office.

Over the years, the tethered float design has proven unreliable for me; I experienced a couple of failures that caused at least one flooded basement. (I now also have a battery back-up system.) Most recently, the float switch "on" position changed a bit higher, causing my backup pump to activate. Not sure why that float changed, but it did and it seemed erratic. From the beginning, it was very tricky to install the old tethered float so that it would not touch walls of the sump or anything and to adjust it to activate i.e. turn on and off where it should.Then comes this product...what a relief! I definitely recommend the additional few dollars for the sensor installation kit; https://www.amazon.com/dp/B08L425Z83?psc=1&ref=ppx_yo2ov_dt_b_product_detailsBTW, in my system, I do not need to add a ground wire. Works perfectly without. Recommend that you test the system and only add the ground wire if it does not activate and shut off properly. Mine's working perfectly without it. Easy to install - I tie-wrapped the old teathered switch to the pump (up, so it was always ON, and then installed this electronic sensor system. I am now able to very easily adjust the heigth of the "ON" sensor; Just loosen a hose clamp a bit and can precicely adjust the height of the sensor pcv pipe the sensors are mounted on. Takes up much less room in the sump than a teatherd float switch which is important to me as I also have a backup battery system installed in the sump. Watched the operation of the new sensor and it is precise and accurate and appears reliable (no moving parts). Wish I had installed this from the beginning years ago!UPDATE 10/25/2023: IGNORE THE GUY WHO INSTALLED A RED PIPE FOR THE UPPER SENSOR ONLY. THAT DOES NOTHING TO PREVENT A STRAY GROUND FROM CAUSING THE LOWER SENSOR TO MALFUNCTION AND COULD RESULT IN THE PUMP NOT SHUTTING OFF!!!! THIS RED PIPE ACCOMPLISHES NOTHING! THAT GUY HAS NO CLUE!!! Again, I recommend that you buy and install the kit I mentioned above to install the sensors, insulating them from the drain pipe and the rest of the system. and prevent a stray ground problem in the future. It's only $10 and I think you can also get it bundled with the sensors for only $5 more.

Works great when you read the manual and follow the instructions! Included internal failure alarm in this switch worked great when I tested it separately. Loud enough to hear all over the basement. Nice feature.Simply attach a wire (not provided) from a known ground source. Existing copper cold water pipe in basement worked fine. Before using a 'suggested' grounding wire (see the manual), after initial installation, I tested the unit and it would not work properly. Grounding was an easy solution.After putting grounding wire into the sump and attaching other end to an existing grounded cold water pipe in basement, unit tested perfectly and has worked reliably for a few months, so far.DO NOT open any of your wall sockets to ground this unless you really know what you're doing!! It should NOT be necessary if you simply connect a non-provided grounding wire to an existing metal pipe, assuming that existing pipe is grounded. Contact a licensed electrician before opening up any live wall plates or connections anytime you have a basic home electrical issue! It's only common sense.I quickly got Excellent live advice from the manufacturer's help phone line (again, read the manual!).This new unit replaced an older unit from the same manufacturer which had worked seamlessly for 10 years or so. Decided to replace it with this updated unit when I replaced the old sump pump with a new one. Cheaper solutions are available, but went with this new one because of my good previous experience with the old switch. I learned the hard way (2 sump pumps ago) to NOT rely on sump pump internal float switches provided with most consumer sump pumps and have had no switch problems since I added external float switches.Not all of your old sump pumps may be easily controlled by an external switch. Some designs require you to bypass the original internal pump float switch without internal pump wiring changes. See the simple first test (below) and/or check with the manufacturer of your old sump pump to make sure before you go to the trouble of installing an add-on switch like this reviewed switch.You should be home free if your old pump installation has two separate electrical power wires which must be plugged in the wall: one for the actual pump and one for the internal pump switch. If so, unplug the old pump switch and substitute the new unit, into which you simply plug your old pump unit. If you have this existing sump setup, I'd pour sufficient water into the sump and separately plug in each of the existing wires to see if the pump starts up without a switch. If neither wire works, the pump might be dead or the breaker for that wall socket might be tripped. Don't bother buying a new switch for the old pump until you can determine the old pump still works. And even if it does work, seriously consider a new pump and switch if the old one has been in use for years. Most submerged machines don't last forever!You might save a few bucks when buying a new pump if buy a model with no internal float switch which will absolutely require an external switch like this reviewed unit.When trouble-shooting a non-working pump it's a lot easier to isolate a switch problem when you use an external add-on 'float' switch or if you have the ability to simply disconnect an internal original switch's plug and plug the separate pump switch into the wall to determine if the problem is the pump or the internal switch. Keeps you from throwing away an existing pump which still has usable life. But again, all machines wear out eventually. Like people.Pumps and switches don't last forever! Test your setup at least annually to try to avoid a very messy and expensive pump/switch failure! And an additional Backup battery pump can be excellent insurance, though even backups can fail. Good luck.