The Optec TCF-Si series of focusers are motorised with temperature compensating functionality and an integrated controller. They are extremely robust and repeatable, this unit has been completely dependable since I first installed it. The telescope side has an Optec 2400 female dovetail and the telescope side has a 2" barrel. There are various adapters available to suit many telescopes. More information can be found
here.
It is in excellent condition, looking to get $850 delivered anywhere in Australia. Comes in the original box with the temperature sensor (unused) and AC power adapter as well as the serial to USB cable.
