needed an endoscope camera because I wanted to determine where power cables were running under our false ceiling. Teslong's camera came at just the right time. The Teslong device comes in a sturdy hard plastic case. The scope of delivery includes the handheld with a 4.3" display, a 5 meter waterproof camera hose (with triple camera), a device stand, USB-C data cable, various attachments for the camera, a 32GB micro SD card, a mini Allen key and instructions (incl. German language).The camera is securely attached to the handheld and can be removed using a mini Allen key.The connection of the camera hose then turns out to be a USB-C cable (whether this can also be connected to other devices I couldn't check whether it can be used in this way). I was immediately enthusiastic about the model, since it comes with a self-sufficient handheld. I already had various endoscope cameras. However, they always had to be controlled using an app (sometimes not very trustworthy ones). Depending on the Android or iOS version, it was not possible to get the cameras to work at all and it is also not possible to handle a notebook in a narrow corner t that simple. So a huge plus point for the Teslong camera. The battery was already pre-charged and the SD card was already inserted and pre-formatted. So it could start right away. The camera hose is relatively rigid, so you can drive through longer pipes or areas that are difficult to access. The rigidity meets my taste. In the past, cables were relatively thin and most often snapped and jammed immediately after entering a choke or duct. The device itself is comfortable to hold and easy to use. The buttons are large enough to operate the device with one hand and guide the camera with the other. During the test, I stood on a ladder under the ceiling and inserted the camera through a small opening in the ceiling light (diameter of the camera housing approx. 8.5mm). Everything is easy to see on the display and the pictures taken also correspond to what is shown on the display. The built-in LEDs are great and also illuminate a pitch-dark area well. The camera can be switched 3 times (to the front, to the left and to the right). In this way, an area can be viewed almost 360° without rotating the camera tube. There is also a 2x digital zoom with 1.3x and 1.5x (although the quality of the image decreases here, mostly due to the poor illumination in a dark room). The handheld also has an LED installed in order to get a good picture of the insertion opening even in a poorly lit area. Conclusion: I am totally enthusiastic about the device and it exceeds my expectations. I was able to do all the work I wanted to do with it with no problems (I found all the cables I was looking for in the ceiling). At the beginning the price seems a bit high, but you get a top device that is super processed. Simply unpack and start looking: no more installing apps, looking for adapters for your smartphone or sitting in a tight corner or niche with a bulky notebook, thanks to the self-sufficient display. The pictures taken in HD quality are great and the endoscope can be used very flexibly thanks to the 2 cameras. For home use, there is a clear purchase recommendation.

I have just fitted 8 downlights in a kitchen ceiling where I had to drill through several joist to get the cables through. I can honestly say that I don't think I could have done the job without this item.
The picture quality is very good and it is superb value for money.
It takes a while to get used to the orientation of the picture when you are using it, but overall it has been one of my best purchases (and I buy a lot of tools).

I used this to find leak in a pipe above a ceiling. I found it. It can take a video or still v close up and allows magnified vision of prob.
I could send pic to plumber.
For the money its great.
Used it again a year later to locate a leak behind a kitchen cupboard. Found source and saved guesswirk of which panel to cut into. After a year battery still working too. It has already paid fot itself twice

We wanted a CO2 detector for the cold room at the brewery and the Inkbird was a great more affordable alternative. I turned on a CO2 line next to it to check the alarm which is why you see the high number in the picture. It’s not quite as loud as your average home smoke detector but you can hear it from outside the insulated room which has two AC units going. The battery life appears to be about one day so it’s best to keep it plugged.

Glad to have this safety alert now in case of a CO2 leak.

I accidentally ordered two. They came charged. Did not require the 24 hour calibration cited in the manual. I put it by a window fan to calibrate for 10 minutes. Sequentially, they both settled at approx 405ppm CO2. I recently purchased another AQI meter from TempTop so I was able to compare pm2.5 to some extent.

I've only had these a couple days but I've closely monitored and corroborated the circumstances. All measurements between both units are effectively identical, no variance unaccounted for. The CO2 measurements proportionally increased based on quantity of occupants in my office, if the door was open/closed, central forced air ventilation (A/C system), and window fan. Most observed ranged have been between 400 and just over 1000, though intentionally breathing on it will exceed this.

The PM2.5 measurements correlate with the TempTop, though PM2.5 and PM10 jiggle up to 003 over the base reading, which is negligible. Because I purchased these to fill the CO2 gap the TempTop does not capture, I don't have much more to contribute in these readings yet.

The temperature and humidity are in line with all my other devices as well.

There was a review regarding them recalibrating on their own. This is an optional feature if you read the book, though I don't know why someone would want that to be recurring regularly.

I said I accidentally purchased two... I think I'll get more. Maybe one for me, but others as gifts. I think it's valuable to know the quality of air being respired, especially in places you spend the most time.

.....

Update:
I purchased a QuingPing monitor based on other reviews I read, largely because it esthetically enumerated the measurements I was most interested in, being Co2, PM, and VoC. This revealed that I absolutely needed to calibrate these units... I assumed when I started them and they hung at 500 for awhile, that was a calibration phase; Anyhow, after calibration they are coming congruent with the QuingPing. Even uncalibrated, bringing this unit to restaurants and my vehicle, etc still demonstrated increased Co2 and PM values, that even if the "floor" was high, was still valuable when taken relatively.

My opinion is that the Co2 alone is an excellent mechanism to measure ventilation in typical scenarios, and that can be used as an effective proxy for air quality generally. This assumes average room area, outdoor air quality, and no extraordinary sources of PM/VoCs like aerosols, flame (candles, gas appliances), or a operating workshop. For the budget minded, or entry level gifter, the Co2 only monitor would be good.

The construction of these are solid, even rugged, and the battery life has been at least adequate for my exploration. I appreciate the USB-C ecosystem. The color added to the screen, though it is static and never changing, makes it passable.

I'm probably going to move to QuingPing primarily, and use these as indicators suggested above (maybe in my car and/or kitchen). The QuingPing, while almost twice the cost, is quite featureful. It includes Wifi connectivity, with onboard and cloud telemetry logging, a nice touch screen and interface, is even more esthetic, and common home automation platform integration, etc. I'll probably settle for two QuingPing units, one in the bedroom and the other in my office. I'm still evaluating the accuracy before committing to a second unit, but it's looking promising.

Very nice and active

 My wife has been having headaches recently over the past few months and I decided to see if elevated Co2 can be the cause. Well, I was surprised to see the high levels of CO2 build up in our house. Having a good quality monitor like MOES WIFI Air Quality Monitor CO2 Detector with temp is very useful!
I like that this monitor is able to switch from C to F because I use F temperature here in the USA. This also comes with a rechargeable lithium battery with a capacity of 2400 mAh which makes this great for when I go camping with my propane heater.
Carbon dioxide, or CO2, is a harmless gas in the atmosphere, but if its levels rise inside a home, it can cause health problems for the people who live there. People and animals exhale CO2 as a natural function of respiration, so CO2 levels can rise if a home is overcrowded and has insufficient air exchange with the outside. Soil capping is a process that can occur in houses built on old farm sites when damp weather causes the soil to expand and release gases into the home, including natural amounts of CO2. Inadequate air conditioning systems can also contribute to elevated CO2 levels. Another source of increased CO2 is the use of fossil fuels in the home--so it is very important to have the tools to monitor your situation and warn you if something is wrong.
Attached are some photos to have a closer look at device. This is USBC which is awesome! The quality of screen is bright and very easy to read in day or night time situations.

I really like this CO2 detector. It has a big digital readout on its front. You can tell the exact CO2 readings in the room along with humidity. It also has a battery icon on its face showing the amount of power left in the charge. It is charged using a USB cable, which is included. It took about an hour to recharge. I am not sure how long the charge lasts, but so far I have had it running a week without any issues. I also purchased this detector because I want to take it when we travel. With the recent deaths due to CO2 poisoning, I decided this little unit is perfect to put in our rental unit.