I have an older gen Apex available. Still works however 2 sockets are questionable (I honestly forget, since this has only been a glorified pH controller and fish feeder for years). The display works but has damage to the cord which makes the display itself very very faint. You can read it, but its very dim. Perhaps a new cable could be put on it.
Selling it all together, not parting it out:
Apex head unit
EB8
3x Bus cables - 2 are like 20'
Auto Feeder
Display
pH probe (may dry out by the time it arrives, so don't count on it being fast to respond)
temp probe
$250 shipped
Selling it all together, not parting it out:
Apex head unit
EB8
3x Bus cables - 2 are like 20'
Auto Feeder
Display
pH probe (may dry out by the time it arrives, so don't count on it being fast to respond)
temp probe
$250 shipped