How to Check the Production Date of Daotong Sensors

1. The red box in the image indicates the serial number of the Daotong sensor. The serial number can be used to check the year and month of production of the Daotong sensor.2. We can check the eighth digit of the serial number (the eighth digit indicates the production year of the Daotong sensor) and refer to the year code table to find that this sensor was produced in the year 2025.Appendix: Corresponding Year Code Table3. Check the ninth digit of the serial number (the ninth digit indicates the production month of the Daotong sensor). This sensor was produced in March.Digits 1-9 represent the months from January to September, A represents October, B represents November, and C represents December.4. From the above information, we can conclude that the sensor was manufactured in March 2025.