Features: The refresh rate is 8Hz, the target temperature measurement ranges is -40~+300℃, and the use environment is 10~50℃. 1.8 inch TFT screen resolution is 160*120, the screen shows the highest temperature, the lowest temperature, the center point. Using acrylic cover, which can better protect the tool and not easy to be damaged, with a long service time. Small in size and easy to carry, you can take it with you to anywhere you want to use it. No built-in battery, using USB power supplys mode, plug in and use it, very convenient and no need to wait. Specifications: Material: acrylic+printed circuit board Module: MLX90640_CS Infrared sensors: MLX90640ESF‐BAB/MLX90640ESF‐BAA Resolution: 32*24 Temperature measurement ranges: ‐40℃~300℃ Measurement accuracy: ±2℃(Central point,20~50℃) Operate temperature: 10℃~50℃ Operate humidity: ≤70% Refresh rate: 8Hz FOV: MLX90640ESF‐BAB (55°x35°), MLX90640ESF‐BAA(110°x75°) Emissivity: 0.95 Power port: Micro USB 5V Item size: 61 * 47 * 21.6mm / 2.4 * 1.9 * 0.9in Item weight: 35g / 1.2ounce Package size: 85 * 60 * 30mm / 3.3 * 2.4 * 1.2in Package weight: 48g / 1.7ounce Packing list: 1 * Thermal Imager