Franzis HT7550 Bedienungsanleitung Seite 9

The most important additional components are the ultrasonic
microphone, the loudspeaker and the battery clip. Every com­
ponent includes a two­core cable with a connector.
Components
•
Pre­assembled circuit board
•
Loudspeaker, 8 Ω
•
Ultrasonic microphone, 40 kHz
•
Battery clip, 9 V
•
2 rotary knobs
Cables and components
Installation of the
Control Elements
All connections on the circuit board
are labeled. The microphone (MIC),
the loudspeaker (LS) and the battery
clip (BAT) have to be connected.
Caution: Do not swap the connec­
tions! Attaching the battery cable the
wrong way round will destroy the
device. Reversing the polarity is im­
possible as the connectors can only
be attached in the right direction.
9