Specifications:        Temperature range: -40 Celsius to 330 Celsius           Accuracy: +/-3 Celsiusor +/-5% of reading           Resolution: 0.1 Celsius or 0.1 Fahrenheit           Horizontal viewing angle / vertical viewing angle: 43 degree +/-1degree / 43 degree +/-1 degree            Infrared image resolution: 220x160           Visible image resolution: 640x480           Image format: png           Video format: mp4           Frame rate: 9Hz           Focal length: fixed           Plug: USB Type-C           Weight: 20g           Colour: Black            Material: electronic components + ABS           Package Size : 175*100*60mm/6.9*3.9*2.4in           Package weight: 250g/8.8ounce               Operation:           1.Scan the QR code in the user manual or enter the URL Download the "Thermal Viewer" software and install it (only support Android phone).           2.Phone Connection           Insert the thermal imager into your phone and the "Thermal Viewer" software will be opened automatically. If your phone doesn't have USB Type C interface, please use original adapter for conversion.           Note:Please turn on the OTG function when connecting to the mobile phone.               Package Contents:            1 x HT-101 mobile phone thermal imager           1 x English User Manual           1 x Box           1 x Type-C to Micro-USB Adapter