The IRT207 is not that flash ; spot size ratio 8:1 , means a very large measuring spot cf better units, ie my gun has a spot size ratio of 18:1 as well a other good features such
>> adjustable emissivity
>> statistical calculation mode (min, max, mean, medium, standard variation, and a few others)
Better than nothing.
Unfortunately most cheaper consumer ir guns are preset give correct temperatures only for surfaces with an emissivity of 0.95 , and building bricks have a very much lower emissivity ( e = 0.45 ) so if the bricks are your basking spot , you will not get an accurate temperature reading from your gun , see this for more information :
viewtopic.php?f=34&t=239064&p=1833542#p1833542
and this explain more :
viewtopic.php?f=34&t=239064&p=1833542#p1833542
It is possible to compensate for emissivity errors but the calculations involved will be beyond most reptile keepers who don't have the necessary physics or engineering education , the existing IR gun is likely 20 to 30 degrees Celsius out when reading the surface temperature the bricks.
For those who have some university physics and engineering the brief explanation is as follows :
the degree to which errors in emissivity settings will affect temperature and T_error (error in temperature) accuracy even not often understood by many professional physicists , engineers , chemists and thermographers . The Stefan-Boltzmann Law gives the radiated infrared energy emitted by a target surface and shows this is exponentially related to the absolute temperature of that surface.
The equation is E_b=εσT^4 where ε is the surface emissivity and the true surface temperature is calculated using this equation
The dual thermometer / hydrometer dial analog unit is rubbish - I'd return it to the shop and exchange for something like this :
https://www.ebay.com.au/itm/DIGITAL-LCD-HYGROMETER-HUMIDITY-METER-TESTER-REPTILE-TEMPERATURE-THERMOMETER/320943327225?hash=item4ab9b687f9:g
I've used one of these for years , and checked , quite accurate wrt temperature and %RH .
Just for air and surface temperatures, these are great and very accurate (I've checked under laboratory conditions) :
https://www.ebay.com.au/itm/3x-LCD-Digital-Temperature-Thermometer-Outdoor-Reptile-Aquarium-Fish-Tank-Meter/310938466818?_trkparms=aid%3D333200%26algo%3DCOMP.MBE%26ao%3D1%26asc%3D20171012094517%26meid%3Db55b89760ae34ae8b598cdb701a364c2%26pid%3D100008%26rk%3D4%26rkt%3D12%26sd%3D320943327225%26itm%3D310938466818&_trksid=p2047675.c100008.m2219