This device adopts an integrated design, which can work without external devices. MODULE: JM_MLX90640_CSB Use mlx90640ESF_BAB infrared sensor Resolution: 32x24 Temperature measurement range: -40 ℃ ~ 300 ℃. Measurement accuracy: +/-2 ℃ (central area, 0 ~ 100 ℃). Operating temperature: 10 ℃ ~ 50 ℃ Operation humidity: Less than = 70% refresh rate: 8Hz No calibration is required Vision: 55 ° x35 ° Display center points, maximum and minimum temperatures Take a photo (90 photos can be saved, you can connect to the computer, you can copy and delete it) Can recharge the battery (200 mAh) TFT size: 1.8 inches (display resolution: 160x128) Product size: 66 x 46 x 20mm Power port: USB Type-C 5V/1A working hours: ≥4 hours Instructions: 1. Charging: Use the USB Type-C line, 5V/1A. 2. Open/turn off: long button in the middle 3. Photo: button mid -key 4. View photos: Press the upper or lower keys 5. Exit photos: Long press the upper or lower keys 6. Copy photos: Connect the computer with a USB cable, and the computer will get a disk. Note: Do not change the photos in the disk or put other files in the disk. exist Before connecting the computer, please charge and shut down. Material: plastic colour: black Package Contents: 1 x Infrared Temperature Sensor 1 x USB Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.