This device adopts an integrated design, which can work without external devices.MODULE: JM_MLX90640_CSBUse mlx90640ESF_BAB infrared sensorResolution: 32x24Temperature measurement range: -40 ~ 300 .Measurement accuracy: +/-2 (central area, 0 ~ 100 ).Operating temperature: 10 ~ 50 Operation humidity: Less than = 70%refresh rate: 8HzNo calibration is requiredVision: 55 x35 Display center points, maximum and minimum temperaturesTake 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 20mmPower port: USB Type-C 5V/1Aworking hours: 4 hoursInstructions:1. Charging: Use the USB Type-C line, 5V/1A.2. Open/turn off: long button in the middle3. Photo: button mid -key4. View photos: Press the upper or lower keys5. Exit photos: Long press the upper or lower keys6. 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. existBefore connecting the computer, please charge and shut down.Material: plasticcolour: blackPackage Contents:1 x Infrared Temperature Sensor1 x USB CableOnly 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.