Audio-Technica U891RCb Cardioid Condenser Boundary Microphone with Local or Remote Switching

Optimize voice capture and control in boardrooms, courtrooms, and security monitoring sites with the Audio-Technica U891RCb cardioid condenser boundary microphone. Designed for professional conferencing and surveillance applications, this UniPoint boundary mic delivers clear, intelligible audio across a 20 Hz–20 kHz frequency range while the 80 Hz UniSteep® low-cut filter minimizes room rumble and HVAC noise. Users gain flexible control with a touch-sensitive local switch (touch-on/touch-off, press-to-talk, press-to-mute) plus remote contact-closure capability to trigger external devices such as cameras. UniGuard® technology provides robust RFI immunity for interference-free feeds in crowded RF environments, and a two-state RGB LED status indicator is remotely controllable for discreet monitoring status. The rugged, low-profile die-cast housing, silicone isolation pads, optional screw mounts and 25 ft TA5F-equipped cable make the U891RCb easy to deploy on tables, podiums or security consoles. Phantom-powered, self-contained electronics eliminate the need for an external power module, simplifying installations. Ideal for AV integrators and security professionals, the U891RCb is a dependable choice for conferencing, surveillance and monitoring—order now to upgrade your audio capture and control.

• Clear, natural voice pickup for meetings and monitoring thanks to a cardioid condenser design and 20 Hz–20 kHz frequency response
• Flexible local or remote switching and two-state RGB LED for controlled muting, press-to-talk, or camera-triggering in conference and surveillance setups
• UniGuard® RFI immunity and 80 Hz UniSteep® low-cut filter reduce interference and low-frequency ambient noise for intelligible audio in security and AV installations
• Durable, low-profile surface-mount casing with silicone pads and optional screw mounting minimizes vibration and secures the mic in high-traffic environments
• Self-contained, phantom-powered electronics with TA5F interface and 25 ft cable simplify installation—no external power module required
• PivotPoint® rotating connector and interchangeable polar elements (sold separately) allow easy cable routing and pattern customization for varied monitoring scenarios