5
2 Features
2
Features
The
EX-TEC PM 4
is available in two models (see Section 8.1):
z
Diffusion device:
basic device without a pump
z
Pump device:
basic device with an integrated pump
(designation on back of device:
P
)
The
EX-TEC PM 4
is suitable for the following applications:
–
House
–
Enclosed spaces
– Warning %LEL
– Measuring vol%
2.1
Visual signals and audible signals
The device features two signalling mechanisms:
z
Red alarm light on top of the device
z
Buzzer on the front of the device
Note:
These signalling mechanisms cannot be switched
off.
An audible signal is emitted each time a key is pressed:
z
Very long signal
On error message
z
Long signal
When switching device off,
When changing menus
z
Short signal
When switching device on,
When confirming a selection,
When navigating within a men
u
