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The EAF has an internal temperature probe, but ivefound that to be inaccurate due to the heat generated by the electronics inside the focus unit.
The need to have both a hand controller and temperature probe connected at the same time is almost nil. you only need the hand controller if you're doing manual focus. otherwise it's a little pointless. the opposite is also true, if you're using manual focus, why wouldyou need an external temperature probe?
I've got an EAF and temp probe on each of my scopes to allow for temperature based autofocus trigger.I've also got a single hand controller in case i need to manually rack a focuser in or out during setup/packupwithouth having to fire up any control software.
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