7.2 RoHS EC Directive
The device complies with the RoHS directive. Compliance with the RoHS directive means that the product
or component does not contain more than the following maximum concentrations of the following
substances in homogeneous materials, unless the substance is part of an application that is excluded
from the RoHS directive:
0.01% cadmium (by weight)
8. Functional principle and features
The detector uses the scattered light principle to detect smoke. A light transmitter and light receiver are
both installed in the measurement chamber. Both are separated by an intermediate wall. No optical
connection is made between the transmitter and receiver when no smoke is present in the measurement
chamber. Penetrating smoke disperses the light so that it hits the receiver. This triggers the detector. It
sounds a loud acoustic alarm. The alarm is switched off as soon as the measurement chamber is free of
smoke.
Surveillance area: 30 m
2
within a room
Battery operation (3x 1.5 V alkaline batteries)
Automatic battery state monitoring