This is a Hand Held Visual Ambient Temperature Sensor with 2 ambient Probes that are constantly comparing the difference in temperature.
Picks up changes in the ambient air temperature and displays the change using a Blue light for Cold, and a Red light for Hot.
Tailored for Paranormal Investigation's to detect Hot/Cold spots that we can't see with our eyes.
Ambient Blue light to detect the unit in the dark.
Work's off 1 x 9 volt(not Included)
Usually Ships in 6 weeks (Can Take Longer/ Covid19 related delays)