Features: USB 5V three key temperature control meter power supply line, intelligent temperature control, precise temperature control, high brightness digital tube clear display. Support up to 50W, and the 2P terminals used can be easily replaced. Wiring input and output design, easy to use, safe and reliable. P0 start temperature, P1 stop temperature, P2 temperature correction. Suitable for USB cooling fan, desktop fan, ceiling fan, USB blowers and more. Specifications: Material: ABS The size of middle host: approx. 60x45x31mm/2.36x1.77x1.22inch USB cable length 15cm/5.91inch Temperature probe cable length 95cm/3.1ft Temperature measurement ranges:-50~110 Accurate temperature control: 0.1 Input: 5V Package Includes: 1 Set USB Digital Temperature Controller note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.