Talk-thru communicator is designed for applications where a cutout in the barrier is impractical. The inside (Master) station comes with a gooseneck microphone, volume controls, and an extended gooseneck microphone. This model is recommended for most applications where there isn’t an existing hole in the glass.


Two-way communication is accomplished through the use of speakers and microphones located on each side of the partition. The master unit is equiped with a 20" gooseneck microphone, power on/off switch, power-on LED, and external volume controls. The Remote unit is vandal-resistant with all controls located within the housing.

  • Rugged Aluminum Construction
  • Duplex Communication
  • Voice Activated Switch
  • Background Noise Level
  • Monitoring
  • Level Detection and Attenuation Control
  • Linear Volume Control
  • Dimensions: 4"w x 8"h


The SC-300 provides electronic two-way, hands-free audio communications (duplex) between a partition.

The SC-300 is equipped with a factory adjusted VOX switch to prevent ambient noise (below 85 decibels) from activating the unit. The SC-300 contains two voice channels, each incorporating a microphone amplifier, VOX switch, compressor, and a power amplifier. The sound amplifier does not exceed a 0.2%
total harmonic distortion rating.

The SC-300 is fully operational between 0°C and 50°C.

Each order comes with an AC/DC power supply (120V AC stepped down to filtered 12V DC) and a 1-year warranty.


Movie Theaters, Ticket Booths, Sport Arenas, etc.


SC300 Headset in lieu of gooseneck microphone and/or AA battery pack for 18-24 hours of rechargeable duty
time based on 25% talk-time.

Drawing 6201 Installation diagram
MODEL #: SC-300
Standard Model
Drawing 6566 Installation diagram
Combination gooseneck
microphone and headset jack.
Drawing 6591 Installation diagram
With wireless headset option
Drawing 6677 Installation diagram
MODEL #: SC-300-TH1X
With telephone handset