Only workable with ZWO Electronic Automatic Focuser
This Hand Controller links to the ZWO EAF (Electronic Automatic Focuser). Made from environment friendly APS material, it comes with a 3.5mm female socket. Offers a comfortable grip with its ergonomic design！
ZWO EAF Hand Controller provides an easy method of focusing the telescope. Features IN and OUT buttons with slow and fast speed rate control.
A “must-have” option for EAF user!