The HH10A consists of the handset with push-to-talk switch, equipped with a US-made coil cord and 4-pin XLR connector.
The HH10B consists of the same handset, coil cord and cradle, but the coil cord is wired to the cradle which contains a hook-switch to mute the earspeaker when the handset is “hung up”. A 10′ cable is wired to the HH10B cradle, with a 4-pin, Neutrik® XLR for connection to an intercom station. We recommend the HH10B for quiet environments where audio from the earspeaker (while the handset is in the cradle) would be a nuisance.
These heavy-duty handsets are equipped with dynamic transducers suitable for intercom use. To prevent feedback and permit high levels before feedback, the interior of the handset is partially filled with a dense mastic material, blocking internal acoustic coupling between the microphone and the earspeaker. A high-quality shielded coil cord is fitted with a Neutrik® XLR connector.
These handsets are molded from commercial telephone quality compounds. No other handset offered for intercom use provides greater resistance to physical damage. The push-to-talk switch in the HH10A and the hook switch in the HH10B cradle are rated for millions of cycles.