RHB-1 Gen 2 (Remote Headset Box) is an optional piece of equipment used to expand headset options on the ADHB-4 Gen2. Each RHB-1 Gen 2 supports one headset/handset and connects to the ADHB-4 Gen2 using RJ-45 Ethernet cable. Up to two RHB-1 Gen 2s can be connected to each ADHB-4 Gen 2. The RHB-1 Gen 2 is a plug and play device and allows the ADHB-4 Gen 2 to recognizes a headset has been remotely connected.
The ADHB-4 Gen2 has programmable gains for each headset input allowing various models to be attached while balancing microphone levels. Selected receive audio level is adjusted using the front panel volume control.