Getting easy road, taking notice in a few lines but well enough to use it (the battery is included) By cons it buggy at a time and gave me wacky values (-4.08 degrees Celsius in my home) I was fine reboot several times, nothing to do and after a (large) moment, everything is back in order weird but otherwise the camera allowed me to see my thermal leaks and housing will allow me to better isolate A reference value was on the screen (selected by measuring when starting the device) and the measured value when you move the object, which can then via a 3 position switch choose to be visually alerted gaps measured (the beam from green to blue if the difference is negative, therefore colder, and from green to red if the difference is positive, therefore warmer) according to pre-programmed tracks (1 degrees, 3 degrees or 5 degrees).