HumanTechnik lisa Instrucciones De Servicio página 22

Transmission range
The radio signals of the lisa transmitters within the house are designed to have
a range of 80 meters under ideal conditions.
The following conditions may result in a reduced range:
- Signal transmission through building structures or vegetation
- Interference from TVs, computer monitors and mobile phones. Under certain
circumstances, this may prevent the receiver from functioning at all.
- Positioning of the transmitter at an unfavourable distance from surfaces which
reflect radio waves, for example floors and walls. This may lead to the signal
wave being weakened or even cancelled out by the reflected wave.
- Metallic objects reduce the range due to the shielding effect of the metal.
- Having units operating at similar frequencies located close to one another
may also result in mutual interference.
- Particularly in towns and cities, there may be many other sources of radio
waves which can disrupt the original signal.
Setting the radio channel
A special digital transmission processensures that the radio signals are picked
up without errors. This process also makes it possible to set 10 different radio
channels. When supplied from the factory, all lisa RF devices are set to channel
0 by default.
It is only necessary to alter this setting to another channel number if you have
several different users operating individual lisa systems in the same building.
Please disconnect the device from the power supply before attempting to
change the channel.
Set the required channel by turning the channel selector switch with a small
screwdriver.
All transmitters and receivers within a system must be set to the same channel
number.
Depiction: Setting the radio channel
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