DFS CT-511 Transmitter

The DFS CT-511 Transmitter wirelessly transmits the operator’s voice to participants listening with DFS CR-511 receivers.

The operator simply plugs the included headphone with microphone into the CT-511 Transmitter.

  • Dual ear headset with attached flexible microphone included
  • USB charging cable included
  • MIC-MIX-AUX IN switch provides speech and music play individually or simultaneously
  • Volume and mute controllable
  • Charging case available


Stereo Transmission +10 dBm
Audio Input 3.5 mm LINE IN
Audio Output 3.5 mm earphone w/ mic
Wireless Transmission 2.4 GHz
Modulation GFSK
Frequency Response 100-15,000 Hz
Battery Lithium, 120 mAh
Operating Time 10 hours (approximately)
Transmission Radius (ft.) 150 (approximately)
Dimension (mm.) 48 (W) x 79 (H) x 14 (D)
Weight (grams) 57

Conference Systems is a division of PSAV. PSAV is the preferred audiovisual rental and staging partner for major hotel brands, conferences/conventions, hospitality management companies, as well as various independent customers and clientele throughout the world.

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Conference Systems
20405 Seneca Meadows Parkway
Germantown, MD 20876

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