boatone
Well-Known Member
Quite simply because not all systems are the same - there are at least 3 different designs. I am currently trying to identify which locks have which systems so that we can produce a comprehensive guide to all the locks which have public power.Perhaps if all the locks operated the same on public power this would not be an issue, why is it that on some you only have to press the sluice button once and others you have to keep your finger on the button?