FB-II 2nd FOCUSER—Circuit board upgrade for controlling 2 focusers at the same time
This upgrade allows you to control 2 focusers simultaneously. If you do not already have a 2nd motor, you will need to purchase one.
|2nd Stepper Motor||
HSM20, HSM30, HSM35, MSM20, MSM30, MSM35, Not needed, I already have an extra motor