Bosch Security

Excellent speech and music reproduction Easy installation with one grille size and one complete set of accessories Choice of different ceiling mounting methods Optional Pilot Tone indication EN 54‑24, UL2043, UL1480 certified

Ceramic terminal connector Loop-through facility EN54-24 certified

Extended listening area Excellent intelligibility of speech and music Uniform distribution of natural sound throughout the room Excellent directivity for use in acoustically difficult, reverberant applications EN 54‑24 certified

Unmatched sound quality and speech intelligibility Smart modular design, flush mountable Sophisticated beam configuration with EASE support Integrated ambient noise level sensor for AVC

The PRA-ANS is an ambient noise sensor to monitor changing ambient noise levels for automatic adjustment of announcement or background music levels (AVC - Automatic Volume Control). This ensures the public address audio is set at a configurable level above the ambient noise in order to guarantee intelligibility of announcements, yet at a comfortable loudness.

This end‑of‑line device is a reliable solution for loudspeaker line integrity supervision, which is a requirement for emergency sound systems. It is connected at the end of a loudspeaker line, after the last loudspeaker of a series of looped-through loudspeakers. It communicates with the PRAESENSA amplifier channel driving that loudspeaker line, to confirm the integrity of the line. Where impedance measurements may not detect a disconnected loudspeaker, depending on the number of connected loudspeakers and cable type, or report false faults, the end-of-line device provides a superior solution to report the correct status of the loudspeaker line. The enclosure size is compatible with the mounting provisions in most Bosch loudspeakers for supervision boards or devices. It can also be reduced in size to fit most cable junction boxes.