The TWIN-EExll is specially designed for application in

potentially explosive indoor or outdoor industrial areas.
It offers two different operating modes that can be selected
using the sliding switch:
As secondary telephone alarm the TWIN EExII is used to
draw attention to incoming phone calls, which are indicated
with high volume and additionally signalled by the integrated
strobe light. Both signals are actuated by the AC ringing
voltage.
In the signal unit mode the acoustic and optical signals are
generated by applying the 230 V line voltage.
The TWIN-EExll is a compact unit comprising power supply,

telephone connection, strobe light, amplifier and loud-
speaker. The bottom box is made of seawater-resistant cast

aluminium coated with plastic. The loudspeaker consists of
impact and cold-resistant plastic and is permanently mounted
to the housing. The strobe light cap made of polycarbonat
forms the housing cover.

The full article number for ATEX and IECEx variants is made up by appending the colour code to the article numbers given below. INMETRO and CUTR variants are available on request.

Transparent: 11

Red: 12

Amber: 13

Green: 14

Blue: 15