ECOWITT WH0291 Soil Moisture Tester Plant Soil Moisture Sensor Meter with Digital LCD Display for Garden Lawn Potted Plant Care Indoor Outdoor Pairing with GW1100 868MHZ

These seem to be recommended by a lot of Home Assistant users. They came in brown boxes (a good thing), well packaged. Pretty easy to setup..pop in a AA battery, open the ecowitt app, add them. You can set up alarms,calibrate them, all within the app. One thing, they are bright green, so easy to see, dark green would be better. Good range out garden isn't huge but the signal is good. One other thing to note, you do need the ecowitt hub, a small USB box that's permanently on. All in all I like them.

A very useful item for monitoring my hanging baskets. To be used in conjunction with my Ecowitt watering system

Seems to work as promised. It's been in place for a while now and the battery is still going strong. It was very simple to use and the screen paired without an issue.I'll caveat the above by saying it's had a very easy life so far - it's used indoors so is protected from the elements and the screen is only a metre away so I've not been testing it's signal strength.Something to be aware of if like me you're using it indoors for houseplants - there's a red led on the top that flashes regularly to show all is well. If it is in your bedroom it will likely disturb you. The fix I found was to look in the box and there is a rubber cap designed to go over the arm holding the battery (to further weather proof it). With a little bit of persuasion this can go over the other bit of the body, neatly hiding the angry LED. Also, as others have mentioned, it is bigger than you might think - not a problem out in a field but you wouldn't want to squeeze this into a small pot.If the manufacturer made one more geared for houseplants (swapping to triple-A batteries to make it smaller, and dropping the LED) I'd grab several

This device comes with an instruction booklet that explains how to calibrate it. The instructions can be a little confusing, but if you manage to work out what to do, the results are still disappointing. Of course, you can just stick this thing in the ground and take it from there. It connects to the little display monitor with no trouble. You will get a soil % moisture reading - no problem. But that reading is pure fiction. Meaningless. I have recalibrated this device 3 times and still its readings fluctuate wildly and make no sense. If you just want to know if the soil is getting more moist or less moist, it will do this. The % will go up and down. But the values of % it give are totally meaningless and fictional. Just remember, it is not a serious scientific measuring device. You will probably need to spend weeks attempting to tweak the readings and still not get it right. So I am disappointed with this device, but can't complain at this price. You get what you pay for. A cheap inaccurate meter.

gives an accurate reading for med sized pots not so accurate on large deep pots

I have to agree with some other reviewers that the science behind this sensor is highly unreliable, sensor measures conductivity and converts this to a percentage in moisture, problem is that conductivity of your pot will keep changing depending on nutrients type, concentration in the soil, type of soil, density of soil and root mass, etc. so you will end up chasing a calibration forever. I was hoping this would tell me how much the plant is drinking given a fixed amount of nutrient solution depending on climate and growing stage but ! to be honest a manual check with a long wooden skewer (just as you check a cake for readiness) remains the best method to avoid over-watering!FYI this is how I calibrated my sensor:0%AD (Dry/Air baseline): Factory initial value is 70. Default 100%AD (Wet/Water baseline): Factory initial value is 500.Take the real-time raw metric reported by your sensor (the Now_AD value). If it drops to 50 in dry air (as in my case for example), your true dry baseline is lower than 70.Calibration:Open your Ecowitt App or check your gateway/console live data page for the specific WH51 channel.Enable Custom Mode for that sensor channel.With the sensor clean and completely dry in the air, look at the Now_AD value (e.g., 50AD). Set the 0%AD value to match this exact dry-air Now_AD reading (change 70 down to 50) to properly zero-out the dry baseline.For wet baseline submerge the sensor probe in a glass of water to check the saturated Now_AD value, and adjust your 100%AD target setting accordingly. (I used a glass of nutrients solution instead of plain water). Save the configuration NB: Perhaps even better to calibrate in soil sample, I tested in a test pot of dry coco coir and then again in wet coco (using nutrients wash), some people here uses double amount nutrients to simulate salt build up.

Dyr men den fungerar perfekt!

Très bonne qualité

Incredibly handy, I love being able to tell where my in ground garden is at without having to go outside, especially getting into July where my tomatoes and cucumbers are drawing up absurd amounts of water in the heat, and I don’t want to have to go out into the heat if I don’t have to. This module is very reliable, and as long as you actually installed the rubber caps on the probe you will have zero issues with moisture getting into it. If you are on the fence, just get it. You can’t imagine how useful this little thing is.

لقد اشتريت فوق ٥ اجهزه قياس رطوبه واخيرا حصلت على جهاز ذو كفاءه عاليه ودقه ممتازه وجوده فى الصناعه

Such an amazing idea, but they miscalculated and misunderstood the function: the depth (height of the spike) is too low. It is not useful unless you want to measure a flower's moisture. I am not sure why you would need to test your flowers - they are fine, just put a finger in the soil. The intention / primary consideration for purchasing a moisture meter is to understand how moist is the ROOT. This is WHY ALL, and I mean *ALL* moisture meters are TALL. Guys, have you gone out there and ever purchased one? They are very lengthy for a REASON! Because they must measure moisture at the ROOT. This only goes as far as your middle finger - which , incidentally, was my thought. This device completely fails at what it is supposed to do and is less than half the size of a typical $10 moisture meter.