Features: This product is operated by the "thermal viewer" software on the cell phone after connecting to the cell phone for the android system. it is very easy to see the infrared for image or measure the surface temperature of objects This product can be used for Hvac, building heat difference detection, equipment troubleshooting, preventive and predictive maintenance, etc. Power supply: power supply for external devices, such as android phones Accuracy: 3 or 5% of reading Package Includes: 1 Pcs Infrared Thermal Imager. Specifications: Material:ABS+Metal Temperature Range: -20 To 300 Operation Temperature Range: 0 To 35 Starage Temperature Range: -20 To 60 Resolution: 0.1 Or 0.1f Working Range: 8-14um Horizontal Viewing Angle Vertical Viewing Angle: 33 X33 Infrared for Image Definition: 320x240 Vsible for Image Resolution: 640x480 for Image Format: Png Video Format: Mp4 Frame Rate: 9hz Focal Length: Fixed Plug: Usb Type-c Size: 59.4mm X 30.3mm X 12mm note: Please allow 0-1cm error due to manual measurement. Make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!