Using this Melexis 5V Contactless Infrared Sensor is a breeze. First, decide if you want to solder it or plug it into a breadboard. It's important to note that this is the 5V version, so make sure your power source matches. When taking temperature measurements, simply point the sensor towards the object or area you're interested in. It'll detect the temperature by absorbing IR waves. Keep in mind that it has a 90 - degree field of view, which is useful for getting an average temperature. Also, don't forget to use the two 10K pull - up resistors we've included for the I2C data lines. For maintenance, keep the sensor clean and dry. Avoid exposing it to extreme conditions outside its - 70°C to + 380°C temperature range. If you're using it with an Arduino or other microcontroller, refer to our easy - to - use tutorial and library, and you'll be able to get it working in just 5 minutes.