2. Description and Installation

The section is divided according to system components into the following subsections:

• 2.1 PSTN Central Unit
• 2.2 Lift Cabin Audio Unit - Universal
• 2.3 Lift Cabin Audio Unit - Compact
• 2.4 Audio Unit - Machine Room
• 2.5 Audio Unit - Lift Shaft - Cabin Roof

Each subsection includes:

•    Component Description
•    Before You Start
•    Mounting
•    Electric Installation