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APPENDIX A
Remote Headset Box
Overview
The RHB (Remote Headset Box) is an optional piece of equipment used to expand headset options on the ADHB-4. Each
RHB supports one (1) headset each. Up to two (2) RHBs can be connected to each ADHB-4. The RHB is a plug and play
device; the ADHB-4 recognizes a connection between the two (2) devices, allowing a central location for configuration within
the ADHB-4.
Compatible Headsets
For a list of compatible Telex headsets, see “Optional Hardware” on page 14.
Features
• ADHB-4 provides power to an RHB.
• Dual channel 1/4” headset jack.
• Volume control knob.
• Supports both Select and Unselect in either ear.
• LED for power and PTT indications.
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