The QMA interface has a very similar performance to theSMA,but in addition it offers an easier, faster and safercoupling operation,helping customers to save significantlytime during production. The packaging density of QMA isincreased compared to SMA connectors thanks to the fact thatno torque spanner is required to fasten the coupling nut.QMA is not intermateable with SMA.QMA connectors are also available as waterproof version（IP68) and are compatible with QLF standard.