The effects of the pandemic, which began two years ago, have become more serious in the last year. Due to the worldwide depletion of electronic parts, we have been unable to mass produce KSLogger-Ez. However, we have enough stock of film sap flow sensors and this one is available for continuous mass production.To be honest, the film sap flow sensor can be connected to most data loggers, and as mentioned in the document, it can also be connected to Tiny microcontrollers such as Arduino and Raspberry Pi for measurement. The remaining problem is the connector needed to connect the film sap flow sensor to the logger. The supply and demand for connectors as well as electronic parts has not been able to keep up since last year. The worst-case scenario is to weld a pin header onto the film sap flow sensor.