EEx Sounder dEV 21

Application
The EEx Sounder dEV 21 is a signalling
device that generates various
signalling tones and signalling tone
sequences and emits them at a high
sound pressure level. The user may
choose between 31 preset signalling
tone groups and one programmable
one. Every signalling tone group
contains 4 different signalling tones.
Wire the control inputs with
floating contacts or jumpers in order
to chose any one of these 4 signalling
tones. The sounder has 8
volume levels. All outer fastening
parts are made of non-corrosive
materials. The stable, all-plastic
housing conforms to protection
degree IP 66, which means the
sounder can be installed both
indoors and outdoors. Explosion
category II 2 G EEx dem IIC T6
allows the sounder to be operated in
hazardous areas of zones 1 and 2.
Design
The explosion protection is given
through the flameproof chamber
and the chamber increased safety.
The flameproof chamber contains
the electromagnetic drive system.
The housing is made of GRP thus
guaranteeing protection against
corrosion.
Furthermore the construction is
lowweight and highly robust.