Shure MX392/S Microflex Supercardioid Boundary MicrophoneMX392 S Supercardioid, Black MX392 Microflex Wired Boundary Microphones from Shure are equipped with features like programmable, silent membrane switches, logic inputs and outputs, and green LED indicators. The high quality solution for a range of applications such as altars, boardrooms and distance learning centers, Microflex Boundary microphones feature interchangeable condenser cartridges. The MX392 features: Surface mount mic; LED logic input