【Wide temperature range】Temperature measurement range: -50°C~+110°C; Operating temperature: -40°C~+65°C 【Power voltage】5V-12V 【Easy to use】Wiring is simple, red wire is for positive and the black wire for the negative. Pay attention to the positive and the negative. If the connection is reversed, the chip will burn out. 【Note】This product does not include a 12V power supply, please prepare it yourself. Suitable for measuring fish tank water temperature, refrigerator temperature, etc.