Qooltek Digital LCD Thermometer Temperature Gauge Aquarium Thermometer with Probe for Vehicle Reptile Terrarium Fish Tank Refrigerator(Fahrenheit)

Excellent Temperature Indicator. Works great. I have 2 and use them on my Hot Water Heater to monitor the in and out temp to track Efficiency. Seems to work great with no issues

Worked great for me I have 8 battery life is good

We have used this all summer in our pool. It seems to be good, but about 5 degrees off. Not enough of an issue for us to send back as we know what the temp is when we look.

From the onset I purchased a digital thermometer from Qooltek and it arrived quickly, but the unit did not function as it was supposed to, and the instructions were "very vague" to say the least. Upon making my initial review, I received an email from "Rose" at Qooltek explaining the situation to me and that I had apparently received a non-functioning unit. Rose explained to me that the reading "Lo" means the unit is bad. She informed me that they would send me a brand new thermometer. The following is my update on said thermometer: "Product update. Upon posting initial review, I was contacted by "Rose" from Qooltek and she told me that I had received a defective thermometer and that they would make it right by sending me out a new unit. I was impressed that companies DO actually read their customer reviews of products. Rose explained to me via email that if digital readout was depicting Lo....then the unit was defective. " "Anyway, Rose did send a brand new unit out and I am happy to say that it arrived intact and it works quite well. I use this thermometer to check water temperature in pex line coming from wood boiler outside into my basement." "My initial review has been upgraded to "I highly recommend this company and their products". Instructions can be found on their website and to be honest, not much to read except how to change from Fahrenheit to Celsius. Rose explained to me that the probe head does NOT have to be inserted dead on...it can lie next to what ever it is you are checking on temp. Enough babbling. Qooltek made good on their product and Rose was indeed a pleasure to chat with and she will make whatever issues you had...right. I highly recommend Qooltek." Upon receiving the new thermometer, my STAR rating goes to a HIGH FIVE!

I bought this thermometer to monitor the heater that I purchased to keep my tank at a good temperature. Within a month I noticed that the tank was cooling off and I assumed the heater had broken. After applying additional heat lights, I noticed with my hands that the water was warmer than the thermometer said. I realized that the thermometer was wrong. I checked against other thermometers and observed it was about 8 to 10° lower than reality. I almost overheated my fish, fortunately I noticed before anything happened to them. Regardless I was disappointed that this thermometer almost led me to overheat some little fish.

I purchased this to take the finger temperature of clients during biofeedback. It is accurate since it gives the same temperature as a similar device made for this purpose. The sensor tip seems sturdy, but time will tell. I wish the wire would be longer since it can’t reach from their chair to my desk. Also I wish there would be hook on it so I could attach it to my computer. Good value for the money. This company could access a new customer-set w these minor changes!

Love this little temperature sensor - was exactly what I needed to monitor the (external) temperatures on my upgraded Sur Ron battery! Where I live, it gets very cold - and batteries tend to lose capacity in cold temperatures. So... I used aluminum tape to stick usb-powered heating pads onto the outside of the battery, stuck the temperature sensor in on a separate part - a little bit away from the heating pads - and then insulated the whole thing with foam. My battery's external temperature went from being around 32 degrees to around 58 degrees! Meaning my range went from around 60% back up to around probably 95%! :) And this little sensor allowed me to monitor it carefully - even while riding around. I just stuck the digital part into my phone holder. The LCD also seems to do surprisingly well in cold temperatures - where most LCD's start to fade and update slow in cold temps. It also seems to match pretty closely to what my inferred thermometer tells me (tested before I insulated everything). 5 stars all the way.

I am using this in the car to monitor the temperature of air flow from the dash vents. I modified the the length of the cable and re-soldered it to the board. Double sided tape holds the display to the dashboard face. I've been using it for only a couple of weeks.