A sensor, precisely how it works is beyond my pay grade but the number of cows can be relatively easily adjusted by anyoneAnother question, with the autofootbaths, what triggers the solution to change after, say 100 cows?
Do you use a cow counter (infrared sensor or similar)?
Or just rely on the dairyman hitting a button part way through milking?
@Bald Rick how does your counter work, and is it reliable?
Thanks all