Shure A400MB Mute Button and Adapter

With unobtrusive design for surface mounting into boardroom tables, the Shure A400MB converts the 5-pin XLR output to a standard block connector. It adds local or remote mute control via a programmable button for use with the Microflex MX395-LED low profile boundary microphones and MX400SMP-compatible modular gooseneck microphones (MX405/MX410/MX415).

Shure A400MB Features

• Configurable as toggle, push-to-talk and push-to-mute functionality
• Onboard programmable switches configure logic settings, LED, and mute button behavior, including touch surface sensitivity
• Compatible with third-party control systems
• Included color rings to match black, aluminum or white finish microphones
• Easy table installation in 1 1/8" (30mm) hole

• A400MB Mute Button and Adapter1
• Mute button1
• Plug-on adapter1
• Spacer1
• Color rings3
• Flathead screwdriver1
• Cable ties2
• Strain reliefs2
• Terminal plug1

• Connector Type6-pin block connector
• Power RequirementsPhantom Power
• Power Consumption5 mW, maximum
• Weight113 g (0.25 lbs)
• Output ConfigurationActive Balanced
• Logic Connections
  • LED IN: Active low (≤1.0V), TTL compatible. Absolute maximum voltage: ­0.7V to 50V.
  • LOGIC-OUT: Active low (≤0.5V), sinks up to 20mA, TTL compatible. Absolute maximum voltage: ­0.7V to 24V (up to 50V through 3kΩ)
• Environmental Conditions
  • Operating Temperature: 5 to 45 °C (41 to 113 °F)
  • Storage Temperature : 29 to 74 °C (­20.2 to 165 °F)
  • Relative Humidity: 0-95%
• Dimensions
  • Base (HxWxD): 3.74x3.74x1.06" (94.96 x 94.96 x 27.04 mm)
  • Mute Button (HxWxD): 1.54x1.54x0.2" (39.02x39.02x5.02mm)
  • Mute Button Tube (HxWxD): 0.87x0.87x3.03" (22x22x76.98mm)
  • Grommet (HxWxD): 1.97x1.97x0.31" (49.97x49.97x8mm)
  • Spacer (HxWxD): 1.93x1.93x0.05" (49x49x1.2mm)

More about Shure's Microflex Series

Communicate with confidence with the Microflex® complete digital conference system from Shure. Scalable at 2, 4, or 8 channel groupings (a maximum of 40, dependent on the region), this versatile system’s components include transceivers, an access point transceiver, networked charging stations, and an audio network interface—all with automatic frequency management and using shielded Cat 5e or Cat 6 cables for ease of installation and customization. This system is integrated with AES-256 encryption to keep your meetings secure.

From handheld, gooseneck, boundary, to bodypack (compatible for head-worn or lavalier), the wide variety of transmitters in the Microflex Wireless series allow you to choose what best fits your collaborative style. Each option boasts Commshield technology for RF noise immunity—so you can hear the person speaking into their mic with crystal clarity without distractions. Powered by rechargeable lithium-ion batteries, Microflex transmitters enable you to maintain your meeting’s momentum for up to 8 hours of continuous runtime.

No matter the size of your space, Microflex Wireless is the ideal conference system for any meeting environment, including flexible/divisible meeting rooms, boardrooms, courtrooms, lecture halls, conferences—even remote management and campus-wide installations. Portable, flush-mount and modular units ensure maximum coverage while freeing you up from the worry of wired components.