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10. Information on the range
The transmitter has a range of up to 100m. This is the so-called free-field
range, meaning the range when there is direct visual contact between the
transmitter and the receiver.
In practical operation, however, there are a number of ambient conditions
which can reduce the range:
• Walls, reinforced concrete ceilings
• Coated/metallised insulation glazing
• Vehicles
• Trees, bushes, earth, rocks
• Proximity to metal objects (for instance, a metal door)
• Proximity to a human body
• Broadband interference, for instance, in residential areas (DECT tel-
ephones, mobile phones, wireless headphones and loudspeakers, baby
phones, etc.)
• Proximity to electric motors, transformers, power-supplies, computers
• Proximity to badly shielded or openly operated computers or other
electric devices
Since local conditions are different at every installation location,
a definite range cannot be guaranteed.
In general, the device will function without disruption any-
where on the grounds of a ‘normal’ one-family house.
Before mounting the system, test that you have uninterrupted
reception at various times of day.