HL2 is a small, yet powerful, inductive hearing loop that is used to amplify speech and voice announcing for persons with impaired hearing. The unit is preferably connected to the speaker output on an existing emergency telephone or voice announcer installation. Should this connection not be easily accessible, an external microphone can be connected and placed in close proximity to the speaker.

HL2 can be configured to work in automatic or manual mode, depending on the requirements of the installation and how frequent the unit will be used. This allows for maximum current consumption efficiency.