© Arnulf Betzold GmbH
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Noise Control PRO – Instructions
Nr./Art. 74446 + Nr./Art. 74747
Warnings for the secure and correct use
1. Keep these instructions for further use.
2. The Noise Control PRO is only to be used during school-lessons or similar
situations.
3. It is not a toy!
4. Do not ever expose it to heat, moisture or wetness: Danger of short circuit.
5. Only use the battery pack when connected to the power supply. Normal
batteries pose a hazard of leaking.
6. Before use, always make sure that all the electric parts such as cables,
power supply, connectors and body housing are in perfect condition! Do not
use any damaged parts!
7. Only use a soft cloth to clean the Noise Control PRO. Do not use detergents contain-
ing alcohol. Otherwise the surface may be damaged.
8. Do not expose the battery pack to fire or high tempartures.
9. Place the device in an easy accessible way to enable an easy disconnection of the
power adapter from the power supply system.
10. The supported safety mechanism may be damaged, if the device is not
used in the intended way.
Contents
Noise Control PRO (W x H x D) 14.5 x 47 x 11 cm
How to install the Noise Control PRO
1. Table: You can place the Noise Control PRO on a table.
2. Wall: You find two suspensions in the back of the unit. The Noise Control PRO can be
attached to the wall either with nails or with screws. Choose either according to the wall
conditions.
3. Stand (tripod): Turn down the two adjustment clips in the back of the Noise Control
PRO, and you can attach it to a stand.
4. Steel board (optional): On the backside the Noise Control PRO is provided
with 4 screw devices, where you can mount the optionally available magnets.
You then can attach it to anything metallic such as a steel board or a white board.
®
Where to place the Noise Control PRO
1. Install it in a place which is neither too hot, nor moist or wet.
2. The Noise Control PRO always reacts to the nearest noises. For example,
if you place it next to an open window it will also react to the outside noises.
3. Try out different places and find the most suitable for you and your group.
We suggest a place close to your group.
Electricity-operated
Inserting or respectively changing the Battery Pack
1A: Open the compartment on the backside of the Noise Control PRO,
using a screw driver.
2A: Remove the battery pack from the compartment by carefully pulling the
connector cable out of the white, two-phase connection socket.
3A: Insert the connector cable into the white, two-phase connection socket on the right
side (see picture). Insert the optionally available battery pack type NIMH 4,8 V into the
compartment.
4A: Shut the compartment.
You can upgrade your Anti Noise Alarm with the battery pack (Nr./Art. 74748).
Indicator of charging conditions
Green is shining – battery is charged
Green is flickering – battery charge is not sufficient
Red is shining – battery is empty or not installed
Nr./Art. 74747 incl. Battery pack
Nr./Art. 74446 without Battery pack
Power supply
Power supply
Instructions
Instructions
Battery pack (Type NiMH 4,8 V)
Nr./Art. 74747 incl. Battery pack
Nr./Art. 74446 without Battery pack
1. The Noise Control PRO automatically
charges the battery pack, as soon as it is
plugged in. The power supply is designed
for the European power network system.
The charging may take up to 10 hours.
1. Start by connecting the power supply
with the Noise Control PRO. Then connect
the power supply with the power network
(The power supply is designed for the
European power network system).
2. Remove the power supply after the
battery pack is fully charged. Now the
Noise Control PRO can be used without
the power supply.
2. When laying the electric power cable
make sure it is neither bent, pulled along
or chafed.
Magnets
(optional)
Stand
suspension
Open here to insert or
change (rechargeable)
batteries
Accumulator lamp
Power Supply
Noise level
adjustment
Red light
Speaker
Yellow light
Power On/Off
Green light
Microphone
Alarm On/Off
Power supply