Features: It can be used for a wide range of applications including electrical, mechanical and automotive. It is also known as an "Imaging IR Thermometer". Small size, about the size of mobile phone, easy to carry. It support Multi-mode, can be modulated into its own ideal mode. High resolution pixels , the visible light image resolution is up to 30w pixels. Built-in rechargeable battery (1800mAh) The display interface of the highest/lowest temperature is clear, easy to see and can be concealed. Specifications: Brand: HT-A1 Voltage: 100-240V Display: 3.2-inch TFT Infrared image resolution: 220*160 Visible light image resolution: 640x480 (300,000 pixels) Viewing Angle/shortest focal distance: 35 ?? x26 ?? / 4.0 MM Thermal sensitivity: 0.07 ?? Temperature measurement range: - 20 ~ 300 ?? (4 ?? F to 572 ?? F) Test and measurement accuracy: ??2?? or ??2% Emissivity: 0.1- 1.0 adjustable Image capture frequency: 9HZ Wavelength range: 8-14um Focusing mode: fixed Palette: rainbow/iron red/black/white/cold Image format: JPG Storage media: built-in 3G Battery type: built-in rechargeable 1800mAh battery Power supply: built-in rechargeable 3.7v lithium battery USB: USB 2.0 Shutdown time: optional 5 minutes /20 minutes/no automatic shutdown Working temperature: 0 ?? ~ 45 ?? Storage temperature: - 40 ?? ~ 60 ?? Relative humidity: