Shure MX392/C Microflex Cardioid Boundary Microphone is a low-profile surface-mount condenser mic designed for clear speech capture in boardrooms, conference spaces, and lecture halls. It features a cardioid polar pattern, a programmable silent switch, logic control input/output, and an integrated preamp.

• Cardioid Pattern (/C): Focuses cleanly on sound from the front while rejecting ambient noise and room reflections from the sides and rear.
• Logic Control: Includes TTL logic LED input and switch output terminals for simple integration with automatic mixers and control systems.
• Programmable Switch: Silent membrane switch can be set to push-to-talk, push-to-mute, or push-on/push-off modes.
• Boundary Advantage: Takes advantage of surface placement to double sound pressure level, providing higher sensitivity and a cleaner direct-to-reverberant sound ratio.
• Interchangeable Capsule: Allows you to swap the cardioid cartridge for supercardioid or omnidirectional options if your coverage needs change.