Your Voice Provides All the Power Required For Communication. Most Communications systems require an AC or DC power source. David Clark Voice Powered Systems only require your voice to generate the power needed. The Voice Powered Communication System is a more sophisticated mechanical version of two tin cans connected by a string. When you speak, your voice travels to a transmitter causing fluctuations in a magnetic circuit. This creates a small amount of current (approximately 20 micro amperes), which is enough to operate the receivers on up to six headsets.

For fixed installations with multiple stations use M5002 jack plates.
The M5002 jack plate has two connectors with weather resistant covers.
It can be panel mounted or fit into a standard utility box.

For portable applications, up to six people, use a junction box.
When proper conditions exist, two-way communications is possible for miles. Voice Powered Communication is a simple, low-cost, maintenance-free system that is ideal for two to six people in moderate noise environments.