Hi, thanks for your fast response.

I’m just wondering how I should order the solenoid and the solenoid driver to be pre-installed.

I have read the regarding pages but a little confused how to add 1$ increment for the solenoid.

Is the increment should be added per unit?

Ex1) New F77 with the solenoid pre-installed => increment *2 for the solenoid and the solenoid driver.

or Ex2) The total numbers of my order unit(N) suggested by the provider => N * increment.

If it is option 2, could you let me know the unit of the following models? Classic FSSK, Classic F122, Classic F77 model f.

Best regards,

Hyung wook