Wireless Thermometer Hygrometer, Bluetooth 5.0 Room Temperature Humidity Sensor with APP Alert, Temp Humidity Monitor with Trend Recording and Data Export, for House, Greenhouse, Cellar(2 Pack)

This little device is easy to use and small enough to fit into confined spaces. I use one to monitor the temperature of my hot water tank and another to record room temperature over time.Data is easy (if a bit slow) to download and gives several weeks of temperature and humidity readings at 10-minute intervals in the exported csv file.

Works well, just don't leave it weeks before you check, as it takes a long time to download the data.

This is a surprisingly good piece of equipment and works well straight out of the box. It comes with reasonably good instructions and is easy to set up. You need to pull off the plastic tag that isolates the battery first and then it's off and running.Pairing to your phone to view the data is a simple matter of downloading the Blue Sensor app and then linking the device. No data is sent off site at any time (could change if they change the app but fine at the moment). Data is sampled every 10 minutes. Do bear in mind that this is connected by Bluetooth so your phone will need to be within range of the device to read the data. That's fine most places in my house, but if you put it in your greenhouse you will need to go out to it to access the data from closer to.The app itself is OK but a bit flaky. All date/time stamps are a few hours out of sync with the actual time but is at least consistent. I can't find any means to reset the time on it. Data is stored for 100 days and you can ask it to email you a CSV file containing a range of dates you specify.Temperature measurement is accurate. You can recalibrate it fairly simply if you need to but it was fine for me. Ambient humidity is reported too but I have no means of verifying the readings.Just under £10 for one of theses sensors seems pretty good value to me and I believe you can order a pack of two of them for £16 which is phenomenal.Once they sort out the app to keep good time it will definitely be a 5* product but until then 4*.

Installed in my motorhome to check lithium battery temperature and the other in the gas cabinet to check outside temperature. Great app that shows temp and humidity, + it also shows a graph to show the temp & Humidity trends. All good so far.

Work really well. Simple to set up, the app is good. They seem to be pretty accurate too. Highly recommend!

They are very good value for money. You can afford to put one in each of your roomsHighley recomended

I put my dog in the back of the van when going places and it’s nice to see what temperature it is from the front to make sure he’s not too warm. Bluetooth connection is automatic making it very easy to connect to and there is lots of information and graphs which go over my head but very useful.

After calibration with a weather monitoring station and Between the 2 sensors theres 4°c difference absolutely rubbish