Tbu - Professional Communication Equipment

The TBU (Telephone Balance Unit) is powered directly from the telephone line and provides a clean 4-wire interface with separate send and receive level controls. Optimum sidetone rejection is achieved by adjusting the SIDETONE NULL trimmer, which compensates for variations in the telephone line balance and impedance.

To enable communication between the 4-wire circuit and the telephone network, connect the TBU to the phone socket and press LINE to power it and seize the line. The PWR ON LED confirms the unit is working. The line can also be seized by lifting a paired phone, or by answering a ringing line when the RING ON LED is flashing. Compatible with similar intercoms from other manufacturers.

Need a quote or a custom configuration? El.Man supplies the unit ready to integrate. Request a quote.