The kit not include batteries！
The download address of the source code and circuit diagram is affixed to the packaging bag. If the URL cannot be accessed, leave an Email Address to the seller after receiving the package!
Main control board: Nano V3.0 (mega328p)
Buzzer: Passive Buzzer
Sensor Chip: MLX90614
Factory calibrated in wide temperature range:
-40 … + 125 ° C for sensor temperature and
-70 … + 380 ° C for object temperature.
This is a new opened store, thank you very much for your support across countries. I hope you are satisfied with the product and wish all the best. Dear friend , the world is so big, thank you for your attention. I wish DIY success, and look forward to your feedback.Share pictures and results with friends everywhere.