09-09-2015, 11:13 PM
Semi-auto means automatic closing disabled. Auto means automatic closing enabled. For the fine details, look at the table that lists the differences between the Ar, Sr, Ac, Sc & Ind logics of operation ( see manual at http://manuals.easygates.co.uk/PDF/bft/R...h10-09.pdf - page 3 - the table on the right ).