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OPERATING DESCRIPTION
Signals
The front part of the device is pierced to
facilitate contact between the gas to be
detected and the semiconductor-based sen-
sor. The front of the device is provided with
three LEDs operating as follows:
LED
Detector supplied
GREEN
with power
Sensor or
YELLOW
detector failure
Detector in alarm
RED
condition
On
Detector not
power supplied
Detector in full
working order
Detector alarm
Green LED
Yellew LED
Red LED
Fig. 1
Off
Detector under testing
sensor being reactivated
off
Flashing
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