HiLetgo DHT22/AM2302 Digital Temperature and Humidity Sensor Module Temperature Humidity Monitor Sensor Replace SHT11 SHT15 for Arduino Electronic Practice DIY

I have found these to be good quality with accurate measurements. I like that they provide the cables with them. HiLetgo seems to be produce reliable hardware at a competitive price. Like all DHTnn modules you need to use care because of the way they are designed.

I ended up buying two different temp / humidity sensors on Amazon. The first one, a sensor sold by WWZMDiB on Amazon (the one on the left in the picture) worked out fine for my ESP 8266 project, but the humidity readings seemed to be about 5% off compared to my "Airthings" radon/humidity/temp readings. The HiLetgo DHT22 in contrast gave me readings that exactly matched my "Airthings" and another table top temp / humidity device. I don't have any way to prove which one was right other than thinking if 3 devices agree, I have a better chance of being close to the actual value. You can see in the picture that the HiLetgo is just neater. The plastic enclosure around the sensor just looks crisp on the HiLetgo, but not quite as good on the other. Solder joints were just a tad cleaner on the HiLetgo. The HiLetgo was about twice the price, but I think it is worth paying a little more for a sensor that I am more confident in using. Both units came with hookup wire which made connecting them to the ESP 8266 a breeze. Both claim the same specs on accuracy. The "WWZMDiB" was cheaper and performed okay, just seemed to be a step down from the HiLetgo.

I'm a little new to the world of ESP and this was my first attempt to add something to my Atom Lites. But boy was it easy. I connected 3 Dupont wires from this to 5V, GND, and a GPIO pin on the Atom and was off to the races. Just added a handful of lines of YAML to ESPHome on Home Assistant and the sensors were created. Literally a 5 minute thing, plug and play - no resistor. In terms of accuracy, I have this and a Govee BLE an inch apart on my desk for a few hours and the Govee says 70.9 F and this is putting out 70.9 F. Govee humidity is 38% and this is 39%. If they aren't accurate, well they are identically inaccurate - and I think that is unlikely. Certainly you can find alternatives for a few dollars less, but I wanted no fussing and this delivered.

These are nice quality modules, the white molded protective housing around the sensor is much better than than others I've used, it has zero flash partially blocking the airflow (like many other cheaper models have) and sharp looking laser print of the model number an a serial number. These do cost a little more than others but they look so much better quality, for me it's always been worth the extra $$ to buy from this supplier - HiLetgo vs the many other cheaper but dodgy looking equivalents out there. Overall these are weird modules to mount and work with because the white plastic sensor housing is attached to the PCB by its four wires only so can bend away from the PCB easily yet there's another mounting hole in the plastic housing at the other end - it can be glued down in place but why should we have to do that. I'd prefer a different PCB layout where the whole module is smaller and neater. The whole thing doesn't need to be this long and cumbersome, I mean there's only a couple of components on the PCB other than the sensor itself. You can easily cut off the protruding housing mounting hole flange if you want. This is more design feedback for the supplier than a review I suppose. These are by far the best performing Temp/humidity sensors I've found for a relatively reasonable price, I'll buy them again without hesitation.

Picture shows a Grafana plot of three of them running within a few feet of each other over the course of about 50 minutes. I don't know how good the absolute accuracy is, but they seem very consistent. Dewpoint is calculated from humidity and temperature according to the Magnus formula. The sensor appears to be an AM2302. BE VERY CAREFUL swapping devices from different manufacturers. If you hold them with the sensor packages facing you and the pins down, some are + OUT - (or VCC OUT GND) and some are - OUT + (or GND OUT VCC).

Work will with my Raspberry pi 4

One of the sensor works most of the time but the other one does not work most of the time and can not read the data from it above 26 degree C by using DHT-sensor-library in Arduino both with and without 40 sec output high and input pull up delay with 10 sec or 50 sec. EDIT: Although the product I received might be defective but they have excellent active and helpful customer service. They contacted me and I get the full refund. Maybe that is the problem inherited in the DHT22 because I still can not properly get readings from both sensors I bought from this store. I leave a 5 star purely because of their customer service.

Bought a two pack and only one will work Upon looking at the sensors I can see that the bottom sensor (the one that doesn’t work) has a diode installed backwards when comparing it to the functioning sensor I haven’t figure out how to contact their customer service to see if they would offer a replacement so I’m leaving this review in hopes that they will reach out, if not this review is to warn future buyers to pick a different brand

Item highly recommended I brought this item for my friend as he wanted something that he could control the temp and the humidity of a enclosure for his pet snake, so I built this that controls the heating Matt and the water level so it stays constant

Eccellenti sensori. Utili per trasformare un SONOFF Basic in un regolatore di temperatura/umidità utilizzando il firmware Tasmota.

تاخر جدا

Pour ce qui est de l’an doc il y a une sérigraphie sur la carte qui permet de connecter + out - . Les valeurs lu,sont conformes La fixation via le trou du capteur suffit.

tout ça pour un rapport prix/vitesse de livraison très acceptable, soit 4 jours.