The LHN-UC15L-SIP is a long throw SIP based IP horn loudspeaker designed for excellent speech reproduction. It is ideal for outdoor and severe indoor applications. The housing is rugged, and it is water and dust protected. The IP horn is standard supplied with a stainless steel mounting bracket. The LHN-UC15L-SIP features a build-in class D amplifier and Digital Signal Processing (DSP) to optimize the speech intelligibility in the environment where it is necessary. It features an integrated microphone used for two-way SIP communication (talk back function), ambient noise level trigger and automatic volume control. The microphone can be switched off via a hardware button.