Audio Unit – Lift Shaft / Cabin Roof 2.5512.5 Audio Unit – Lift Shaft / Cabin RoofDescriptionThis audio unit is designed for installation on the lift shaft bottom or lift cabin roof, orsimilar places where communication is needed during lift maintenance, for example.The audio unit is enclosed in a robust yellow cover. It is not intended for outdoor usebut perfectly fits in lift shafts – is resistant against fall of small objects, dripping oil,etc. The ALARM button activates the dispatching centre connection, the TRIPHONYbottom enables conference connection with the other audio units of one and the samelift. The audio unit contains a built-in microphone and a loudspeaker. Thanks to itssize and robustness, the audio unit features a very good sound.LoudspeakerLED indicator (red) – unit initialisation errorDoor locking screwAddress setting doorLift number (1–8) settingAudio unit position setting“Call in progress” indicator – yellow“Call established” indicator – greenALARM button – white-backlit at relaxTRIPHONY button – yellow-backlit when the triphony mode is activeOperating instructionsThis unit may only be used by authorised persons such as the lift maintenance staff.The TRIPHONY button activates voice communication between all units with the samelift number.Figure 2.21Audio Unit – LiftShaft / CabinRoof Description